Calibre record · Railroad-grade pocket watch
Hamilton grades 992 and 992B
Documented
Made to the North American railroad time-service standards that followed the 1891 Kipton (Ohio) collision; among the most widely carried railroad watches.
- Manufacturer
- Hamilton Watch Company
- Type
- Railroad-grade pocket watch
- Winding
- Keyless; lever-set
- Production
- 1903–1940 (992); 1940–1969 (992B)
- Country
- United States
- Diameter
- 16 size
- Height
- Undocumented here
- Jewels
- 21
- Frequency
- 18,000 vph (2.5 Hz)
- Power reserve
- Undocumented here
- Oscillator / escapement
- Detached lever escapement
- Complications
- None (open face, lever-set to railroad standards)
Figures are those commonly published for the standard version; individual versions and grades differ. “Undocumented here” means the value has not yet been confirmed for this record.
