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.
VECO Vapor Heating System
This document contains information about the VECO vapor heating system, the very best offering of the Vapor Engineering Company, circa 1930. It's always a joy to find one of these in a basement.
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