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residential and correspondence) which have better reputations. One such
school is:
[56]Lockmasters
5058 Danville Rd. Nicholasville, KY 40356
(606) 885-6041 800-654-0637 Fax:606-887-0810 EDUCATION@LOCKMASTERS.COM
[57]American Security Distribution
has a Certified Locksmith Training Program.
[58]Tech-Train Productions
Tools and Instruction for Professional Locksmiths
[59]National Auto Lock Service auto
locksmithing books and
[60]software
Some (not all) states in the US have licensing requirements. The
[61]California Dept. of Consumer Affairs lists the requirements and licenses
locksmiths. CA requires not only the locksmith license (issued by the Bureau
of Security and Investigative Services, but also a Contractors License
(unless you only do small jobs,) category C-28 Locks and Security
Hardware - with tests on trade skills and law/business required.
The ALOA provides information on [62]Getting Started in Locksmithing
Someone starting up may have trouble in judging the time various tasks
take, and hence in quoting a price. A "Flat Rate Manual", even a simple
one, can be a big help. Joe points out, "It's a good tool for
understanding the tradeoffs in your price structure." It can be used as
a starting point, and then you can adjust prices as you see fit.
13b. How do I learn more about Master Keying?
Here are some references:
The Manual of Master Keying, by G.L. Finch available from The National
Locksmith and from his son.
Gerry Finch was highly regarded as a technical writer on locksmithing.
Info, Sales & Support: glfinch@ix.netcom.com
Fundamentals of Master Keying, by Jerome Andrews available from ALOA
Master Keying by the Numbers, by Billy Edwards available from Security
Resources
14. How do Simplex pushbutton locks work?
Hobbit has written an excellent discussion on workings of
Simplex locks. Hobbit left FTP Software and his FTP archive is
currently unavailable. However we have [63]a copy available.
15. Is there a formula that can find the combination of a Master Lock?
Not as far as anyone knows. I.e., the combination is not derived
from the serial number. You can buy code books with which
will tell you the combination for a given serial number, but these are
big rather expensive books that list (nearly) every lock.
However it may be possible to obtain the combination from [64]Master Lock.
Additionally, John F. Bousquet writes:
There is another way. There is a shirt picket sized formula book.
From the serial number you determine which of several progressions
were used by the factory. Then a guide number is found from the
table to divide into the serial number and a remainder is found.
This is referenced on a page in the guide. The last digit is
manipulated and that narrows it down to about 5 possibilities. I
bought one of these 20 page pocket Try out combination finders and
never wound up using it. Now I just call it up on notebook computer.
An [65]inside view of a Master-type lock shows how it works.
16. Can the combination of a Master Lock be found though manipulation?
Recently a method of finding the combination of a Master Lock has been
presented on alt.locksmithing. It seems there is a formula that
relates the numbers in a combination to each other. The first and
last digit of any combination will both have the same remainder when
divided by 4, and the second digit's remainder when divided by 4 will
be - or + 2 from the first and third's remainder. For example, if you
knew the last digit of the combination was 5, the first digit could be
any digit that had a remainder of 1 when divided by 4 and the second
number any digit with a remainder of 3 when divided by 4. This means
given one number in the combination, there are only ten numbers that
can be in each of the other two positions, and thus only 100 possible
combinations given one number in the combination.
This "modulus 4" constraint does not appear to apply to "current"
production locks (1999?-).
And it turns out there is an easy way to find the last digit of the
combination. On older Master Locks, ones where the arrow at the top
is raised, simply pull on the shackle and turn the dial until it
catches, that's the third number in the combination. On news locks
with the recessed arrow, there are twelve places the dial will catch
if you turn it while pulling on the shackle. Seven of these will
catch between two numbers, ignore these, and find the the five that
catch on a number. Four of these will end in the same digit, i.e, 1,
11, 21, and 31, the fifth end with a different digit, and the is the
third number in the combination.
This means that given the knowledge, time, and patience, anyone can
find the combination and open your lock. But then so can anyone with
a pair of bolt cutters, a hacksaw, or maybe even a hammer. These are
three (US) dollar locks. They have many useful applications, but they
are not high security locks. Plan your usage accordingly.
_PLEASE_ don't post a question on alt.locksmithing
giving a serial number and asking for the combination for that
lock. Yes - there are books relating the two - but very few people
will take you at your word that it is your own lock. Instead the
most likely result is the start of a flame war!
17. What is the "shear line"?
Visualize a door lock - there is a fixed block (the lock body or
cylinder) of metal with a cylindrical hole in it - the axis of this
hole is horizontal. It is filled with a "plug" which is the part
which turns with your key - and something attached to the rear of
the plug actuates the latch/bolt when you turn the plug with the
key. There are some small vertical holes drilled in both the plug
and the fixed block so they match up - and they are in a straight
line which is the same line as the key. Each hole (pin chamber)
is filled with (at least) two pins (small cylindrical pieces of
metal - except that the portion of the bottom pin which touches
the key is pointed) but the pins are of varying length, and there
is a spring at the top of the chamber so that the pins are pushed
away by the spring. The bottom pin is short enough so that it will
be pushed completely down within the plug and the top pin (imagining
right now there are just two pins - extra ones are only used for
master keying) goes from inside the top block to inside the plug.
Now the plug can't turn, because in each pin chamber there will be
a pin blocking the "shear" line - the line where the pin chamber
would "shear" apart when the plug turned.
You put your key in - and the different heights on the key are
made to "complement" the different lengths of the bottom pin so
that all of the bottom pins are raised up just to the "shear line"
between the plug and the fixed block part of the lock. Then
the key can turn the plug around its axis and actuate whatever
internal mechanisms are inside.
[66]Picking a lock is a matter of raising the pins to the shear line, but
without the key.
18. What is "impressioning"?
Impressioning is a technique for opening a lock by making a key out of
a key blank for the lock. The blank is filed to fit; the place and
amount of filing depends upon small marks left on the key blank by the
pin tumblers. The procedure starts with smoothing the key blank with
fine abrasive paper or a very fine file to remove any marks or
scratches and to leave a surface which will show the marks. The key
blank is then inserted into the lock and the blank twisted from side to
side and rocked up and down. The blank is removed and inspected for
marks and a shallow cut made with a file on the mark closest to the tip
of the blank, or on the most prominent mark. (There are several systems
for determining which mark should be cut and for the correct way to
twist and rock.)
Repeat this for the same position until the tumbler doesn't leave any
mark on the blank and then move to the next pin. When the last cut is
made the lock should open with the newly cut key - assuming that the
interpretation of the marks and the cutting has been done right.
The advantage of impressioning for opening a lock is that it creates a
key for that lock. But the process is slow and requires a fair amount
of skill. With expert skill levels, the process is considerably
faster. There are a number of special pliers made to hold the blank
and make it easier to give the proper twist with rocking that will mark
the blank. The marks on the blank are difficult to see and you must
start with a blank that fits the lock. (Or several blanks, as this
doesn't always work the first time.) Impressioning may not be as quick
and easy as picking the lock. Picking a lock often leaves tell-tale
scratches on the tumblers and plug that won't happen with
impressioning.
A manual on impressioning by Mark Wanlass is available in the ftp archives
of indra.com - ftp.indra.com:/archives/alt-locksmithing/impressioning
A web version is available at:
http://www.gregmiller.net/locks/impress.html
19. What is a code? What is a codebook?
Ever see a lock on a desk, filling cabinet, or a key with a number
stamped on it like FR332, 2H5212, or 61624? Those are called codes.
They tell locksmiths exactly how to cut a key to fit the lock. There
are three types of codes.
There are direct digit codes. Each digit corresponds to each cut on
the key, the value of each digit tell how deep to make the cut.
Schlage prints the code for the key directly on the key. These codes
are usually long, each pin needs its own digit.
The second type in which each digit does not directly correspond to
the depth, but there is a pattern between the code and the key. Often
mathematical tricks are used (for example you must subtract 435 from the
code, then cut the key).
The last type require a locksmith to have a codebook. There is no
pattern to the cuts on the keys. The Reed Codebooks are one of the
most common. There are 14 general volumes (cars, cabinet, suit
cases, door locks) and 5 padlock volumes. Each volume is about 600
pages long. Several manufactures now selling computer programs that
contain all this information. The software is often copy-protected.
Here's information on several products - all have demo disks. Note that
features differ, and so different programs may appeal to different users.
+ Blackhawk Products: DOS version $399, Windows version $479,
copy-protected by use of a hardware key.
o Blackhawk has a full [67]code program on the Internet.
Passwords are provided by subscription. There is a
fully-working demo, and some other information.
+ HPC: DOS version phased out; Windows version now being sold.
Suggested list price $695. Disk-based copy protection on the
DOS version. (Windows version - ?)
+ Locksmith Ledger: DOS version only, $699.95. No copy
protection.
+ Genericode - "Reeds Codes" on disk.
+ Treskat: DOS version only, $498 or less. Disk-based copy
protection. (There have been many complaints on the net about
Treskat's customer service, especially when a customer calls
about problems with the copy protection.)
20. How do I open a car door with a Slim Jim?
Besides picking the lock, one can open a car door with a wire coat
hanger. Open the coat hanger by unbending the wire, leaving a
small loop at one end. Insert the looped end of the wire hanger
between the rubber weather stripping and a side window. Hook the
looped end of the wire around the button of the door lock and pull
it up to the open position. Many lock buttons are without a lip,
an anti-theft measure, so that the wire coat hanger slides off
without lifting it. One can also try to snag the door handle and
pull it open.
The Slim Jim, a thin strip of metal with a notch cut at the bottom
side, slides down the passenger window into the door. The notch
tries to catch a rod running inside the door that connects the lock
and the lock buttons. Pulling on this rod pops the lock into the
open position. Many modern cars have the rod shielded from this
access. Most cars today have many wires running through
the doors to control such things as power windows, power locks,
heated side view mirrors, lighted key ways, and burglar alarms.
Some newer cars have airbags in the doors - setting them off is a very
dangerous and expensive mistake! The Slim Jim can snag one of these,
or a mechanical part and cause damage. Most locksmiths advise against
using a Slim Jim except on old cars. The pros often use wedges,
lights and manuals of parts locations to avoid damage and increase
their success rate.
21. What is a jiggler key?
A thin piece of metal cut in the general shape of a key, the jiggler
slips into the keyway of many locks and most car locks. The jigglers
in the set come with a variety of general cuts that vaguely resemble
cuts on keys. A jiggler is slipped into the lock and moved around,
much as using a rake type pick, until the lock opens. If one jiggler
does not work then the next one in the set is tried. Probability of
success depends on the skill of the user and on luck.
22. Is there an ethical dimension to locksmithing?
Yes. Locksmithing is an old craft, and there is a strong tradition of
ethical responsibility. A trainee (apprentice) learned about locks
and security, and was supposed to have the personal integrity to
avoid abusing that knowledge. This "do no harm" concept has been
incorporated into the 'hacker ethic' which is found at MIT (in the
"hacking community") and elsewhere.
23. I have a safe without the combination - how do I open it?
"Either throw the safe away, or pay a safe expert to open it, or
perhaps work out a trade with the safeman: he opens it, you get the
contents, and he gets the safe. Please try and use a tiny bit of
common sense: if anyone could get a quick and easy way to open your
safe by posting to alt.locksmithing, your safe wouldn't be worth a damn,
would it?"
A safe expert (which usually means a member of SAVTA) usually can open a
safe by either "manipulation" or drilling to access the lock's internals
and then working the lock.
[68]Drilling can be repaired and leave the safe in excellent condition.
23a. How do I change the combination of a safe?
The better safe locks can be changed to a new combination.
This involves insertion of a "change key" into the back of the
combination lock, and dialling the new combination. Usually the new
combination is dialled using a "change index" rather than the usual
"opening index" (usually located at 12 o'clock.) There are restrictions
on choice of the numbers - so be sure to find out the details before
doing this yourself. Carefully review the instruction sheet for the lock
[69](example)
before doing this.
WARNING: It is hard to open a safe which has been set to an unknown
combination or one which doesn't work. So be sure to exercise the new
combination several times with the door open before closing the door and
locking the safe.
24. How do I disassemble a Kwikset key-in-knob entry set?
0) Open the door. (If you can't, call a locksmith!)
1) Dismount outer knob from door (the screws are on the indoor side.)
2) Depress spring retainer and remove spindle.
3) Reach in through spindle opening and gently release spring.
retainers by pushing towards center. This can be done -- VERY
awkwardly -- with a pair of narrow screwdrivers. Or you can get a
Kwikset Removal Tool (inexpensive), which is just a short piece of
sheet steel of the correct width with a "U" chomped into the end.
The points of the U engage the tips of the retainers and move them
automagically. (see drawing and measurements below)
4) Cylinder will pop out of knob. Rekey normally.
5) When done, snap everything back together and reinstall.
Kwikset cylinder removal tool - cut from a piece of metal
_____________________________________
\ |
/____________________________________|
Sheet-metal stock thickness: approx 1/16th inch.
Width (top to bottom in illustration): approx 7/16ths inch
Length (left to right in illustration): Whatever works;
official version is about 6 inches
Cutout end _broadens_ slightly, to approx 15/32nds inch
Notch in end is somewhere between semicircular and V (parabolic?)
and about 1/8 inch deep from points to bottom of curve.
Corners wind up being at about 40 degrees between
outside and inside edge, maybe a bit less.
Not very critical. The important thing is that there be two points
at about the right spacing, with about the right inward slope, to
engage and move the retainers towards the center.
If you need more detail than that, you should probably leave this
task to someone who has done it before, or at least get them to
give you a hands-on lesson. The only part that isn't Trivially
Obvious is the operation of the retainers, and the above should
be sufficient info for you to figure that out.
25. Why are posts of binaries (pictures) against the consensus rules of this
news.group?
This has been discussed a number of times in the past. The consensus of
this news.group agrees with usenet Nettiquette (note that
alt.locksmithing is part of usenet) that the disadvantages of
including binaries in a text news.group outweigh the advantages.
Some of the disadvantages are:
+ A huge post causes other posts to expire faster on the
servers.
+ A huge post seriously impacts download time for those of us
who do bulk-downloads to minimize our connect-time costs.
+ A huge post impacts those of us (and there still are some)
whose connect costs are by-the-byte.
The "Nettiquette" docs are easily found in news.announce.newusers and
among those there is one titled: "How to find the right place to post
(FAQ)" which has a section "Binaries (images, executables, sounds,
etc.)" dealing with this exact question. It says that there are
"binaries" news.group and they "are the only places where you should
ever post a file that is not directly human-readable, such as pictures,
software, or even Microsoft Word files (which are not readable unless you
have a copy of Microsoft Word on your computer.)"
The alternative which has met with the most approval is to put a
picture on a Web page and post the URL in your alt.locksmithing post.
[70]PhotoPoint is a site which offers
free service for this purpose. Another alternative is to post the binary
to alt.pictures or some other binary news.group and mention that.
26. Should my business be a shop or a mobile unit (truck)?
When you reach the point of opening your own locksmith business (after you
have the locksmithing skills and business skills) this is an important decision.
There are some kinds of merchandise - safes, high-end
architectural locksets, and so on - where a customer really wants to
come in and "kick the tires" for a while. There are others which are
"impulse sale" items - stuff you wouldn't carry on a service call but
which they'd be interested in if they saw it on a display rack - or
which are just too big to haul around. And there are some items, and
accounts, where the customer really wants to know that you have a _Fixed
Address_, for various reasons; like it or not, a mobile shop is often
thought of as a transient rather than a Trustworthy Member of The Local
Business Community.
If you open a shop and just sell the same products and services you
would out of your trunk, it probably won't pay. If you can use it to
make a substantial amout of sales you wouldn't otherwise get, it
probably will.
Think about your local market, think about your possible shop locations,
think about whether you can get that leverage and whether you're willing
to make the investment in time, stock and personnel to make it pay off.
Other online locksmithing related resources:
+ [71]Graham Pulford's "Catalogue of High Security Locks"
+ [72]"MIT Guide to Picking Locks" Web page.
+ [73]"MIT Guide to Picking Locks" in Postscript.
+ [74]Hobbit's Simplex lock description
+ [75]Steve Haehnichen's pick images ftp://ftp.vigra.com/steve/locks/
+ [76]Medeco High Security Locks, Inc.
+ [77]Loompanics Unlimited Book Catalog
+ [78]Paladin Press catalog
+ [79]The National Locksmith trade magazine.
+ [80]South Carolina Locksmith Association
+ [81]Gardall Safe Corporation
+ [82]California state law regulating locksmiths - select "Business
and Professions Code" and put "locksmith" in the search box.
+ [83]Greater Philadelphia Locksmith Association
+ [84]New York Association of In-house Locksmiths, Inc. also
has Job Listings
+ [85]Locksmith Publishing Corp. Locksmith Ledger, a trade magazine
+ [86]Lock-Man Locksmith
+ [87]The Keyless Lock Store
+ [88]Locksmith Business Community
+ [89]Various locksmithing information. The picking.tools
Directory includes images of pages from the Septon catalog.
+ [90]HPC, Inc.Designer and manufacturer of Locksmithing Equipment.
+ [91]Mas-Hamilton Group
+ [92]Institutional Locksmiths' Association
+ [93]BiLock high security locking systems
+ [94]Westthorn House software for the professional locksmith
+ [95]Locksoft software
+ [96]Master Lock Co.
+ [97]Ilco Unican A major manufacturer of locking products, etc.
+ [98]A French language site with a section on [99]Picard locks
+ [100]UNE PETITE HISTOIRE DES CLEFS & DES SERRURES A SMALL
HISTORY OF KEYS & LOCKS
+ [101]JB's Locksmith Central with many links.
+ [102]Gil-Ray Tools Inc. Key Machine Cutter Sharpening & Sales Center
+ [103]Lockpicking Infopaedia
+ [104]Safe and Lock Technicians Safe & Vault Opening and Servicing
+ Scott Berg's [105]Vault Door Photos
+ [106]V.A.F. Verband fur Aufsperrtechnik und Fahrzeugoffnung
e. V. i. G. - a German language site for an association for
lock-picking and car-opening techniques
+ [107]On-line shop in German
+ [108]Forum and Newsletter in German
+ [109]Sportenthusiasts of Lockpicking - Germany
+ [110]Sportsfreunde der Sperrtechnik Deutschland e.V. - Germany
+ [111]Internet Security Reference
+ [112]Dafor Oy company
+ [113]Tann Canada high quality safes
+ [114]Gunnebo AB An international group of companies "focused
on security and safety". Includes Tann Canada, Rosengrens,
Fichet-Bauche, etc.
+ [115]specialty locksmith supply Curtis Clippers new and used,
and much more (for locksmiths and security professionals only)
+ [116]Framon Manufacturing key machines and locksmithing tools
+ [117]Locksmith, Lee Dobbs Locksmith, Security Store Homeinfo
on auto transponder keys
+ [118]Paper Locksmith (paper models of 3 locks! - a bicycle
chain combination lock, a warded lock, and a disk tumbler
lock with two tumblers)
+ [119]A-1 Lock and Safe, Knoxville, TN security, safes, locks,
alarm systems
+ [120]IAHSSP Home Safety and Security.
+ [121]Accu-Lock, Inc. offers re-conditioned KEYCARD locks, and
repairs Ilco locks.
+ [122]BEST Access Systems
+ [123]Security Solutions Manufacturer of U-Change rekayables
and supplier for Detex and others.
+ [124]Tolkey Products Auto related locksmithing - incl. tryout keys
+ [125]Evva - security locks
+ [126]Sargent and Greenleaf Lock Manufacturer
+ [127]AMSEC Manufacturer of Safes
+ [128]Abloy
+ [129]iHerculeez Safes wholesale to locksmiths
+ [130]High Tech Tools Car opening tools for the locksmith.
+ [131]Lock Picking links
+ [132]Used Safes buy/sell
+ [133]Lockcollectors Review
+ [134]A Bank Vault at the Federal Reserve Bank of Cleveland
+ [135]Lock codes for GM 2000 models and Master combination
padlock series 900001-921500 - restricted
+ [136]Blackhawk Products "Software that Works for Locksmiths"
+ [137]Lock-Picks.com "a full line of locksmith tools and lock
picking tools"
+ [138]Highpower Security Products Electromagnetic Lock and
Access Controls
+ [139]AltSecurityAlarms electronic security
+ [140]Lock Shop Software SuperKey 2000 - masterkeying
+ [141]Auto Transponders and Security
+ [142]Blue Dot Locks by WebLockSmith and Dallas Semiconductor
Locksmith fora
+ [143]Clearstar Security Network By subscription only,
currently $30/yr. Requires user name/password which can be
requested from the site.
+ [144]The National Locksmith No fee. Requires user
name/password which can be requested from the site.
+ [145]The Associated Locksmiths of America (ALOA) Oriented to
ALOA members, with some information for the public and for
prospective members.
+ [146]Locksmith.com No fee. Requires user name/password which
can be requested from the site.
+ [147]Security Information Management Online Network (SIMON)
No fee. Open forum.
+ [148]Security Safe New and Used Safes, Service (northern Calif.)
+ [149]Sieveking Products Company Locksmith tools and books
+ [150]Lockpicking Infopaedia
+ [151]Electromagnetic Locks and Strikes
+ [152]Jet Hardware - keys, etc.
+ [153]Marray Enterprises Electrified lock sets, power transfer
hinges, etc.
+ [154]Georgia Safe and Lock Companyesp. see the FAQ
Glossary:
There is also a [155]Dictionary for
Locksmiths being developed by the LIST Council which can be seen at
the Greater Philadelphia Locksmith Association Web site. The LIST
Council's latest draft of a [156]Glossary is part of
their Dictionary for Locksmiths.
blank
A key that has not yet been cut to fit a lock.
core
A removable cylinder and plug, used in a interchangeable
core system.
core key (sometimes control key)
A key which is used to remove a core.
cylinder
The part of the lock in which the the pins are set and
which contains the plug.
cuts
The notches cut in the key to make it fit a lock.
follower (plug follower)
This is a cylindrical object of the same outer diameter
as the plug (there are various diameters, often about
1/2") which is used to push out or follow the plug when
the plug is to be removed. This retains the top pins and
springs in the lock body.
key way
(short answer) The slot into which the key is inserted.
(long answer) Refers to (a) the size and shape of the
(cross-section of the) key, and (b) the opening in the
lock which is shaped to admit the key and to keep out
most keys of different sizes and shapes. Whether the
keyway can be patented by the lock manufacturer as a way
to prevent others from manufacturing compatible key
blanks and therefore to restrict access is open to
dispute. Recent court cases make it doubtful that the
simple design is patentable, but a keyway design which is
involved in the patented method of operation of a lock
may have patent protection.
master key
A key which opens a group of locks designed to match it.
pin tumblers
The pins in the lock which are moved to the shear line by
the key.
pin chamber
the tubular hole in which pins and a spring stay.
plug
The part of the lock which the key is inserted and is
rotated by the key.
sidebar
A lock part located at the 'side' of the plug and fitting
into longitudinal grooves in both the plug and the lock
body. This keeps the plug from turning until the sidebar
is retracted into the plug. Retraction is blocked until
the correct key (or picking) moves the pins or other
tumblers to positions which cease to block the retraction
or produce some other action allowing the retraction. A
sidebar can add additional positioning beyond the usual
"shear line" and so can make picking more difficult. A
number of locks use a sidebar to increase security.
VATS
GM's Vehicle Anti-Theft System which uses a resistor in
the key shank in addition to the cuts on the key.
wafer tumbler
Used in locks which are less expensive than pin tumbler
locks. They behave somewhat similarly.
warded lock
A lock using wards to keep an incorrect key from entering
the key hole and turning.
Appendix
Here are some of the things collected about locations and
availabilities (most are from alt.locksmithing). We do not endorse
any of these, but feel that you can get information by reading. As of this
writing Septon and Paolo are the only suppliers we know of that will sell
to overseas customers.
Septon, Inc. P.O. Box 9, Malden-on-Hudson, NY 12453
(800) 537-8752 voice (914) 246-3416 fax (914) 246-0638 outside North America
Will sell to overseas customers, but requires credit cards and a U.S. $100
minimum order on such sales.
Call for Catalog.
Steve Arnold's Gunroom (URL http://www.cyber-core.com/gunroom/) sells a
variety of pick sets, pick guns, and a small number of books. They will
handle foreign orders which are paid for by an international money order
in US currency.
Steve Arnold's Gun Room
PO Box 68
Dept. Net
Dexter,OR 97431
541 726-6360
possible e-mail amooooo@aol.com
[157]Paolos.com (altlocksmithing@paolos.com)
carries auto entry tools, lockpick sets, lockpicking tools and various other
non-locksmithing items. Visa/MC, 30-day satisfaction, low-price guarantee.
Phoenix Systems Inc. P.O. Box 3339, Evergreen, CO 80439
303-277-0305 [Survivalist Group, although the "Shoot all the Commies
for God" stuff is kept to a minimum.]
Call for Catalog.
Here are a few titles: (with Library of Congress Catalog Number)
- - ----------------------
Title: Locksmithing
Author: F.A. Steed
LC Number: TS 520 S73 1982
Title: All About Locks and Locksmithing
Author: Max Alth
LC Number: TS 520 A37 1972
Title: Professional Locksmithing Techniques
Author: Bill Phillips
LC Number TS 520 P55 1991
See Question 5 for some more book citations. A source of locksmithing
and general security books is:
IAHSSP Books
P. O. Box 2044
Erie, PA 16512-2044
Ph: (814) 868-0650
Their catalog is free; they stock lots of professional and
hard-to-find material; will sell to overseas customers.
See their [158]Web site.
You can buy books on many topics from
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