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.
Beacon Boiler Reference Book, Boilers Made Prior to 1959, Part 8
This is an excerpt of the Beacon Boiler Reference Book, Sixth Edition and includes ratings for boilers made prior to 1959. This section contains pages 147 through 165 and includes ratings for these manufacturers: National U.S. Radiator Corp., Nelson Mfg. Co., New York Central Iron Works, New Yorker Steel Boiler Co., Niagara Radiator & Boiler Co., Norge Heat Div., Norse Boiler Co., Novelty Iron Co., Oil Equipment Laboratories, Inc., Oil City Boiler Works, Orr & Sembower, Inc., and Otto Boiler Co.
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