Vintage GE "Thermal Control"

[launderess]

What is it?

https://hibid.com/lot/161480620/ge-thermal-control?ref=lot-list

 

[kenwashesmonday]

I believe it's a thermostat for a GE furnace.  GE used to sell a lot of home heating plants.

 

[hobbyapocalypse]

It's a programmable thermostat

We had one like it for our coal furnace in the 1960's. It has a temp control knob for day and another for night. You can see one on each side of the box near the bottom. The clock could be set up like a timer to activate the night and day settings at certain times of day.

 

[DADoES]

 
The cover appears to be hinged, opens to access clock programming?  Of course, the seller didn't provide a photo of such.

 

[launderess]

Who knew?

https://americanhistory.si.edu/collections/search/object/nmah_1392737

https://www.ebay.com/itm/144797451419