four positions: Off - Low - Med - Hi.
12V DC.
Coil resistance 3 Ohms.
Two screw terminals.
Ivory plastic knob, imprinted “Heater” in gold lettering, with 10-32 threaded metal insert.
Plated steel case 3 5/64"L x 1 5/64"W x 3/4"H (78.2 x 27.4 x 19.1mm).
7/16" -28 thread mounting stem, .26" (6.7mm) long.