Entrance area to a larger room or rooms within a building to be used as a waiting room.
Local exhaust ventilation
An industrial ventilation system that captures and removes contaminants emitted from nearby sources before dilution into ambient workplace air can occur.
Local solar time
A system of astronomical time in which the sun crosses the true north-south meridian at 12 noon, and which differs from local time according to longitude, time zone, and equation of time.
The geographical location of a piece of property.
Any mechanism that fastens something and prevents it from opening, turning, etc.
Lock or lock-on control is a feature of drill trigger switches which allows the user to select and fix a certain speed. The drill then operates without trigger finger operation until the user squeezes the trigger for instant stopping, called electric braking. In a variable speed (vs) drill, the switch can be locked at top speed.
Nut fitted into a piece of pipe and screwed onto another pipe to join the two pieces.
Folder over seam, between metal sheets, locking them together in a flat joint.
Washer, which has teeth or is made of spring steel, which helps to keep a nut tightened against it from coming loose.
Stainless steel wire used to keep a nut or bolt from loosening, it is threaded through a hole and twisted a calculated number of turns per inch and then attached to an anchor point.