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.
Installation of Oil Burning Equipment (1941)
Standards of the National Board of Fire Underwriters for the Installation of Oil Burning Equipments as Recommended by the National Fire Protection Association, 1941. Thanks to Larry Sperling for scanning and sharing this with us.
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