- push button lock
- n.a self contained lock with controls that must be pressed in a specific pattern or sequence to open the lock
Locksmith dictionary . 2014.
Locksmith dictionary . 2014.
button knob — n. the knob in a key in knob lock that includes a push or turn button … Locksmith dictionary
Mirror lock-up — With mirror lock up the mirror (2) flips up towards (5) well before the shutter (3) opens. As a result light no longer reaches the eyepiece (8). Mirror lock up (often abbreviated to MLU) is a feature employed in many Single Lens Reflex (SLR)… … Wikipedia
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