Limit switch (NSN 7687-44948-001) - Cutler-Hammer

Robust limit switch by Cutler-Hammer.    

Connector: circular 3-pin 

Package: Khaki metal block LWH (40 x 25 x 27mm exc. connector and bush mount.

Overall : 60 x 25 x 50mm. 

Mounting: Bushing ( threaded with two lockwire nuts , one spring washer and locating tab)

 also known as a sensitive switch, due to robust protective enclosure.