used 1P3T Rotary Switch, 3 position, 1/4 inch shaft, 3/8" mount bushing Solder terminals. Wafer material: ceramic. As presently configured, the outer wafer serves only as a terminal block for two 20K 2 watt resistors and one 610 ohm 1/2 watt resistor.
Thermoline laboratory electric furnace rated to 1,700 Centigrade (over 3,000 F). Chamber is 10 X 10 x 10 inches. It can be plugged into a 220 volt dryer receptacle.
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