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.
Actual and Claimed Advantages of Panel Heating
The things we talk about today, they talked about more than 50 years ago. Check out this article from the Western Plumbing and Heating Journal in 1950 regarding the actual and claimed advantages of panel heating.
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