I thought this would be an old school rate of rise heat detector. I am lost on this gizmo. This is as close a photo I can get. One was on lower floor, another was on 2nd floor hall. Unique feature of house is boiler and whole house fan. Any direction would be apreciated.
Heat detector.
^yep!
Thanks all!!!
No batteries. Those are spring wound and loud as hell. Sat through a sales presentation in 1980.
Breast and nipple from Shebott the 1st girl robot.
What did I win?