10-27-2021, 05:32 PM
Never mind, I found it. Vanguard 50 foot heat detector. It is 1950's. Apparently it has some type of wind mechanism also, so if it goes off, it winds out/up, and is no good anymore. Pretty fascinating, actually. I didn't know that there was some sort of device for heat detection, or smoke, dating back to the turn of the last century.
