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.
Richardson "Perfect" Pipeless Heaters
This brochure from October, 1924 tells all about the "Heat at low cost" that's available to those who choose Perfect heaters from Richardson & Boynton Co.
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