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.
Construction and Rehabilitation Costs for Buried Pipe with a Focus on Trenchless Technologies
This technology helps prevent groundwater pollution and makes pipe replacement far more affordable for residents and municipalities. Plus, it also saves many yards, sidewalks and streets from being dug up. Thanks to David Goldman for finding and sharing it with us.
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