BA-2R708-P7
HONEYWELL BA-2R708-P7 LIMIT SWITCH 20A125, 250 OR 480VAC PIN PLUNGER (LOT OF 2)
A nice touch is the Honeywell manual that uses plain English.
BRAND NEW! MICRO-SWITCH 20A 250V PIN PLUNGER LIMIT SWITCH BA-2R708-P7
This unit spans 6 inches, so it can be used as a reference point for other measurements.