Hamilton Model 21 WW2 Ship Chronometer Detent Block

This is an inspected used detent block for a Hamilton model 21 movement from a former chronometer repair shop. The model 21 is the large spring detent escapement chronometer.  Note the second picture shows the detent block along with all parts such as the detent spring, locking jewel, trip spring,  escape wheel etc.  You are only getting ONE DETENT BLOCK.

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.