Hamilton Model 21 WW2 Ship Chronometer Trip Spring chronometer Note: the movement ring is

Note: the movement ring is sold separately

The clock keeps excellent time as we have oiled

which was spun off from the watch business in 1957

we have a vintage Chelsea ships clock in excellent condition attributed to the U

Hamilton Model 21 WW2 Ship Chronometer Trip Spring chronometer Note: the movement ring isThis is a "trip spring" for the spring detent (shown in picture to its right) for a Hamilton model 21 movement (last picture). Over time the end of the trip spring wears and it must be replaced. Note that we service these chronometers and have more parts. Email us with your needs. We also have the repair manual and can download you a copy. Photo of model 21 movement for display purposes only.