Hamilton Marine Chronometer
WWII-era precision ship's chronometers supplied by Hamilton to the US Navy
2 references
“Differs” marks a spec with different recorded values. — means not recorded.
| Spec | Model 21 Model 21 Marine Chronometer | Model 22 Model 22 Chronometer Watch |
|---|---|---|
| Case Differs | brass movement in a gimbal-mounted wooden box | Mahogany box with brass gimbals; nickel-plated brass movement |
| Caliber Differs | Model 21 | Model 22 |
| Movement type | Manual | Manual |
| Jewels Differs | 17 | 21 |
| Power reserve | 48 h | Not recorded |
| Complications | power reserve indicator | Not recorded |
| Produced Differs | 1942–1972 | 1942–1969 |