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.
The Danger of Food Contamination by Aluminum
Larry Weingarten, who knows more about water heaters than most of us, shared this circa-1932 booklet about The Danger of Food Contamination by Aluminum. We include it in the Water Heater section because some water heaters have aluminum anode rods.
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