Perfex Series 155 Magic Dial Thermostat
Here are photos of a circa-1944 Perfex Series 155 Magic Dial Thermostat, as well as the instruction manual.
Radiant Heating Technique of Interest to Contractors
This article is by Doremus L. Mills of Revere Copper and Brass, written in 1948. In it he "reviews radiant heating technique with which heating contractors should be conversant." Special thanks to Jim Walls for finding and scanning it.
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