Rare furnace clock set to mechanically turn a furnace off and on with a mechanical timer device at the back of the clock. Honeywell produced some of these clocks. ( c.1915-1920)
Superior quality clock movement with a quiet tick.
Have spotted others with a thermometer mounted on the top and clock below.
Clock runs for 8 days and is in good running order keeping spot on good time.
Clock will sit upright if you place one or two quarters under one side of the clock.
Nice collectible rare clock to add to your collection.