hdl:1842/4859 ProQuest. "Simple security measures: how to safeguard your practice - ProQuest". Retrieved 2018-09-26 – via ProQuest. Smonet Deadbolt Lock...
A night latch (or night-latch or nightlatch) is a lock that is fitted on the surface of a door; it is operated from the exterior side of the door by a key and from the interior (i.e. "secure") side of the door by a knob.