Tiny Screw for Hamilton WW2 Ship Chronometer "Trip Spring"

This is the tiny "trip spring screw" that attaches the trip spring (first picture) to the spring detent (shown in picture to its right) for a Hamilton model 21 movement (last picture). We suggest you use (or purchase) a small sliding pin vise to hold the screw and to screw it into place.  This type pin vise is often used to remove and hold balance wheel screws.

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.