-J-

jackscrew
n. a threaded rod used for centering and balancing a vault door & frame in position during installation
 
jamb
n. the vertical components of a door frame
 
jiggered finish
n. a surface adorned with overlapping concentric circles
 
jimmy proof
adj. pertaining to a lock having a bolt which interlocks with its strike
 
JIS
abb. Japanese Industrial Standard
 
jumbo cylinder
n. a rim or mortise cylinder of 1-1/2" diameter

 

A B C D E F G H I J K L M N O P Q R S T U V W X Y Z Appendix

This listing of the Locksmith Dictionary is courtesy of