Swiss Aircraft Clock

The construction of this timepiece is similar to a watch, even though it is referred to as a clock. This Swiss aircraft clock was made by Wittnauer (Longines), circa 1950. Two mainsprings provide enough torque to keep this aircraft clock running for 8 days. The construction of the balance wheel and escapement is similar to a watch of medium grade of that vintage, but the white alloy (Invar) hairspring has a Breguet overcoil, usually found in better watches.


clock with dial


clock movement


clock with balance removed


clock with gears visible


clock with barrels visible


clock with parts removed


front plate


balance wheel



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