Locksmith Study Guide Locksmith Study Guide

Locksmith Study Guide Locksmith Study Guide

An otoscope can be helpful for reading disc-tumbler locks
by providing light and magnification.
True
A. True
B. False
Kwikset locks come with a KW1 keyway.
A. True True
B. False
Many Schlage locks come with an SCL1 keyway.
A. True False
B. False
The purpose of direct (uncoded) codes on locks is to
obscure the lock's bit ting numbers.
False
A. True
B. False
A skeleton key can be used to open warded bit-key locks.
A. True True
B. False
Typically, the lock on the front of the car's driver side will
be harder to pick open than other less-often-used locks
on the car. False
A. True
B. False
A standard electromagnetic lock includes a rectangular
electromagnet and a rectangular woodand-glass strike
plate. False
A. True
B. False

False

, A blank is a key that fits two or more locks.
A. True
B. False
One difference between a bit key and barrel key is the
barrel key has a hollow shank.
True
A. True
B. False
Parts of a flat key include the bow, blade, and throat cut.
A. True True
B. False
The Egyptians are credited with inventing the first lock to
be based on the locking principle of today's pin-tumbler
lock. True
A. True
B. False
Before impressioning a pin-tumbler cylinder, it's usually
helpful to lubricate the pin chambers thoroughly.
False
A. True
B. False
When you are picking a pin-tumbler cylinder, spraying a
little lubrication into the keyway may be helpful.
True
A. True
B. False
If a customer refuses to pay you after you finish the job at
their house, you have the legal right to remain inside their
house until they pay you. False
A. True
B. False





, A long-reach tool and a wedge are commonly used to
open locked automobiles.
True
A. True
B. False
It's legal for locksmiths to duplicate a U.S. Post Oflce box
key at the request of the box renter— if the box renter
shows a current passport or a driver's license. False
A. True
B. False
The Romans are credited with inventing the warded lock.
A. True True
B. False
Five common keyway groove shapes are left angle, right
angle, square, V, and round.
True
A. True
B. False
To pick open a pin-tumbler cylinder, you usually need a
pick and a torque wrench.
True
A. True
B. False
Fire-rated exit devices usually have dogging.
A. True False
B. False
Common door-lock backsets include:
A. 2 1⁄2 x 2 1⁄2 inches
B. 2 3⁄4 x 2 3⁄8 inches 2 1/2 x 2 1/2 inches
C. 1 1⁄2 2 x 1⁄2 inches
D. 2 3⁄8 x 3 inches





, How many sets of pin tumblers are in a typical pin-tumbler
house door lock?
A. Three or four
Five or Six
B. Five or six
C. Eleven or twelve
D. Seven or eight
Which lock is unpickable?
A. A Medeco biaxial deadbolt
B. A Grade 2 Titan None of the Above
C. The Club steering wheel lock
D. None of the above
Which are basic parts of a standard key-cutting machine?
A. A pair of vises, a key stop, and a grinding stylus
B. Two cutter wheels, a pair of vises, and a key shaper A pair of vises, a key stylus, and a cutter wheel
C. A pair of vises, a key stylus, and a cutter wheel
D. A pair of styluses, a cutter wheel, and a key shaper
What are two critical dimensions for code-cutting cylinder
keys?
A. Spacing and depth
Spacing and Depth
B. Bow size and blade thickness
C. Blade width and keyhole radius
D. Shoulder width and bow size
Which manufacturer is best known for its low-cost resi-
dential key-in-knob locks?
A. Kwikset Corporation
Kwikset Corporation
B. Medeco Security Lock
C. The Key-in-Knob Corporation
D. ASSA

The most popular mechanical lock brands in the United
States include: