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 enought 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.
Select This Link to see another java clock, which will open in a new (small) window. This is a java version of a Bell & Ross aircraft clock.
