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NC Locksmith Exam Section 6 2025 Questions and Answers 160 Prep - --CORRECT ANSWER--a standard door preparation which consists of a 2-1/8" cross-bore with a 2-3/8" backset, and a 1" edge bore with a mortise 1" wide and 2-3/4" high 161 Prep - --CORRECT ANSWER--a standard door preparation which consists of a 2-1/8" cross-bore with a 2-3/4" backset, and a 1" edge bore with a mortise 11/8" wide and 2-1/4" high Adjustable Collar - --CORRECT ANSWER--a spring loaded cylinder which can fill a range of gaps between the cylinder head and the door or escutcheon surface Adjustable Mortise Cylinder - --CORRECT ANSWER--Any mortise cylinder whose length can be adjusted for a better fit in doors of varying thickness Architectural Finish Code - --CORRECT ANSWER--One of a series of specifications codes used to indicate the color and texture of a metal end product that can be installed. Some finish specifications also note the base metal characteristics and processes used to obtain the end ....COPYRIGHT ©️ 2025 ALL RIGHTS RESERVED...TRUSTED & VERIFIED 1