What is this? What was it used for?
Thanks,
Skylab
Appears to be the mount for a task light. Clamps to a tool or table top, tubular mounted light slips over the four legged taper cross.
Ahh....Master Appliance Co.....hehehe
-> http://www.electrotherapymuseum.com/Manufacturers_Of_Electrotherapeutical_Apparatus/Master_Appliance/index.htm