Locksmith Study Guide With Complete Solutions
2024/25
An otoscope can be helpful for reading disc-tumbler locks by providing light and magnification.
A. True
B. False - Correct Answer True
Kwikset locks come with a KW1 keyway.
A. True
B. False - Correct Answer True
Many Schlage locks come with an SCL1 keyway.
A. True
B. False - Correct Answer False
The purpose of direct (uncoded) codes on locks is to obscure the lock's bit ting numbers.
A. True
B. False - Correct Answer False
A skeleton key can be used to open warded bit-key locks.
A. True
B. False - Correct Answer True
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.
A. True
B. False - Correct Answer False
A standard electromagnetic lock includes a rectangular electromagnet and a rectangular woodand-glass
strike plate.
,A. True
B. False - Correct Answer False
A blank is a key that fits two or more locks.
A. True
B. False - Correct Answer False
One difference between a bit key and barrel key is the barrel key has a hollow shank.
A. True
B. False - Correct Answer True
Parts of a flat key include the bow, blade, and throat cut.
A. True
B. False - Correct Answer True
The Egyptians are credited with inventing the first lock to be based on the locking principle of today's
pin-tumbler lock.
A. True
B. False - Correct Answer True
Before impressioning a pin-tumbler cylinder, it's usually helpful to lubricate the pin chambers thoroughly.
A. True
B. False - Correct Answer False
When you are picking a pin-tumbler cylinder, spraying a little lubrication into the keyway may be helpful.
A. True
B. False - Correct Answer True
,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.
A. True
B. False - Correct Answer False
A long-reach tool and a wedge are commonly used to open locked automobiles.
A. True
B. False - Correct Answer True
It's legal for locksmiths to duplicate a U.S. Post Office box key at the request of the box renter— if the
box renter shows a current passport or a driver's license.
A. True
B. False - Correct Answer False
The Romans are credited with inventing the warded lock.
A. True
B. False - Correct Answer True
Five common keyway groove shapes are left angle, right angle, square, V, and round.
A. True
B. False - Correct Answer True
To pick open a pin-tumbler cylinder, you usually need a pick and a torque wrench.
A. True
B. False - Correct Answer True
Fire-rated exit devices usually have dogging.
A. True
B. False - Correct Answer False
, Common door-lock backsets include:
A. 2 1⁄2 x 2 1⁄2 inches
B. 2 3⁄4 x 2 3⁄8 inches
C. 1 1⁄2 2 x 1⁄2 inches
D. 2 3⁄8 x 3 inches - Correct Answer 2 1/2 x 2 1/2 inches
How many sets of pin tumblers are in a typical pin-tumbler house door lock?
A. Three or four
B. Five or six
C. Eleven or twelve
D. Seven or eight - Correct Answer Five or Six
Which lock is unpickable?
A. A Medeco biaxial deadbolt
B. A Grade 2 Titan
C. The Club steering wheel lock
D. None of the above - Correct Answer 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
C. A pair of vises, a key stylus, and a cutter wheel
D. A pair of styluses, a cutter wheel, and a key shaper - Correct Answer A pair of vises, a key stylus, and
a cutter wheel
What are two critical dimensions for code-cutting cylinder keys?
A. Spacing and depth
B. Bow size and blade thickness
2024/25
An otoscope can be helpful for reading disc-tumbler locks by providing light and magnification.
A. True
B. False - Correct Answer True
Kwikset locks come with a KW1 keyway.
A. True
B. False - Correct Answer True
Many Schlage locks come with an SCL1 keyway.
A. True
B. False - Correct Answer False
The purpose of direct (uncoded) codes on locks is to obscure the lock's bit ting numbers.
A. True
B. False - Correct Answer False
A skeleton key can be used to open warded bit-key locks.
A. True
B. False - Correct Answer True
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.
A. True
B. False - Correct Answer False
A standard electromagnetic lock includes a rectangular electromagnet and a rectangular woodand-glass
strike plate.
,A. True
B. False - Correct Answer False
A blank is a key that fits two or more locks.
A. True
B. False - Correct Answer False
One difference between a bit key and barrel key is the barrel key has a hollow shank.
A. True
B. False - Correct Answer True
Parts of a flat key include the bow, blade, and throat cut.
A. True
B. False - Correct Answer True
The Egyptians are credited with inventing the first lock to be based on the locking principle of today's
pin-tumbler lock.
A. True
B. False - Correct Answer True
Before impressioning a pin-tumbler cylinder, it's usually helpful to lubricate the pin chambers thoroughly.
A. True
B. False - Correct Answer False
When you are picking a pin-tumbler cylinder, spraying a little lubrication into the keyway may be helpful.
A. True
B. False - Correct Answer True
,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.
A. True
B. False - Correct Answer False
A long-reach tool and a wedge are commonly used to open locked automobiles.
A. True
B. False - Correct Answer True
It's legal for locksmiths to duplicate a U.S. Post Office box key at the request of the box renter— if the
box renter shows a current passport or a driver's license.
A. True
B. False - Correct Answer False
The Romans are credited with inventing the warded lock.
A. True
B. False - Correct Answer True
Five common keyway groove shapes are left angle, right angle, square, V, and round.
A. True
B. False - Correct Answer True
To pick open a pin-tumbler cylinder, you usually need a pick and a torque wrench.
A. True
B. False - Correct Answer True
Fire-rated exit devices usually have dogging.
A. True
B. False - Correct Answer False
, Common door-lock backsets include:
A. 2 1⁄2 x 2 1⁄2 inches
B. 2 3⁄4 x 2 3⁄8 inches
C. 1 1⁄2 2 x 1⁄2 inches
D. 2 3⁄8 x 3 inches - Correct Answer 2 1/2 x 2 1/2 inches
How many sets of pin tumblers are in a typical pin-tumbler house door lock?
A. Three or four
B. Five or six
C. Eleven or twelve
D. Seven or eight - Correct Answer Five or Six
Which lock is unpickable?
A. A Medeco biaxial deadbolt
B. A Grade 2 Titan
C. The Club steering wheel lock
D. None of the above - Correct Answer 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
C. A pair of vises, a key stylus, and a cutter wheel
D. A pair of styluses, a cutter wheel, and a key shaper - Correct Answer A pair of vises, a key stylus, and
a cutter wheel
What are two critical dimensions for code-cutting cylinder keys?
A. Spacing and depth
B. Bow size and blade thickness
