NC locksmith exam section 7| Exam Questions with Complete Solutions 100%
Solved| Grade A+
Levels of Keying the divisions of a master key system into hierarchies of access, as shown in
the following tables. Note: the standard key coding system has been expanded to include key
symbols for systems of more than four levels of keying.
Maison Key System [from the French meaning "house" key system] a keying system, in
which one or more cylinders are operated by every key (or relatively large numbers of different
keys) in the system: e.g. main entrances of apartment buildings operated by all individual suite
keys of the building
Master Key 1. A key which operates all master keyed locks or cylinders in a group, each lock
or cylinder usually operated by its own change key. 2. To combine a group of locks or cylinders
such that each is operated by its own change key as well as by a master key by for the entire
group. 3. An automotive key which operates all or most locks on a vehicle where there is also a
valet key employed.
Master Key Changes the number of different usable change keys available under a given
master key.
Master Key System 1. Any keying arrangement which has two or more levels of keying. 2. A
keying arrangement which has exactly two levels of keying.
Master Pin 1. Usually a cylindrical shaped tumbler, flat on both ends, placed between the
top and bottom pin to create an additional shear line.
Maximum Adjacent Cut Specification (MACS) the maximum allowable difference between
adjacent cut depths.
, Multiplex Key System 1. A series of different key sections which may be used to expand a
master key system by repeating bittings on additional key sections. This type of system always
includes another key section which will enter more than one, or all of the key ways. 2. A keying
system which uses such key ways ans key systems.
Odometer Method a means of progressing key bittings using a progression sequence of right
to left.
One Column Progression a process where key bittings are obtained by using the cut
possibilities in one column of a key bitting array
Parity the property of being either even or odd, as the depth number of a bitting in a
combination, or the possible progressives in a given position of a two-step progression
Pinning Chart a numerical diagram which indicates the sizes and order of installation of the
various pins into a cylinder. The sizes are usually regulated by the manufacturer's reference
number which equals the quantity of increments a tumbler represents
Progression a logical sequence of selecting possible key bittings, usually in numerical order
from the key bitting array
Progression Column a listing of the key bitting possibilities available in one bitting position
as displayed in a column of the key bitting array
Progression List a bitting list of change keys and master keys arranged in sequence of
progression.
Random Master Keying an undesirable process used to master key which uses unrelated
keys to create a system
Solved| Grade A+
Levels of Keying the divisions of a master key system into hierarchies of access, as shown in
the following tables. Note: the standard key coding system has been expanded to include key
symbols for systems of more than four levels of keying.
Maison Key System [from the French meaning "house" key system] a keying system, in
which one or more cylinders are operated by every key (or relatively large numbers of different
keys) in the system: e.g. main entrances of apartment buildings operated by all individual suite
keys of the building
Master Key 1. A key which operates all master keyed locks or cylinders in a group, each lock
or cylinder usually operated by its own change key. 2. To combine a group of locks or cylinders
such that each is operated by its own change key as well as by a master key by for the entire
group. 3. An automotive key which operates all or most locks on a vehicle where there is also a
valet key employed.
Master Key Changes the number of different usable change keys available under a given
master key.
Master Key System 1. Any keying arrangement which has two or more levels of keying. 2. A
keying arrangement which has exactly two levels of keying.
Master Pin 1. Usually a cylindrical shaped tumbler, flat on both ends, placed between the
top and bottom pin to create an additional shear line.
Maximum Adjacent Cut Specification (MACS) the maximum allowable difference between
adjacent cut depths.
, Multiplex Key System 1. A series of different key sections which may be used to expand a
master key system by repeating bittings on additional key sections. This type of system always
includes another key section which will enter more than one, or all of the key ways. 2. A keying
system which uses such key ways ans key systems.
Odometer Method a means of progressing key bittings using a progression sequence of right
to left.
One Column Progression a process where key bittings are obtained by using the cut
possibilities in one column of a key bitting array
Parity the property of being either even or odd, as the depth number of a bitting in a
combination, or the possible progressives in a given position of a two-step progression
Pinning Chart a numerical diagram which indicates the sizes and order of installation of the
various pins into a cylinder. The sizes are usually regulated by the manufacturer's reference
number which equals the quantity of increments a tumbler represents
Progression a logical sequence of selecting possible key bittings, usually in numerical order
from the key bitting array
Progression Column a listing of the key bitting possibilities available in one bitting position
as displayed in a column of the key bitting array
Progression List a bitting list of change keys and master keys arranged in sequence of
progression.
Random Master Keying an undesirable process used to master key which uses unrelated
keys to create a system
