Waltham 1888 open face
Mechanical
c. 1888
No photos yet
Notes
1888-1901
open face calibre
bimetallic screw balance
Breguet hairspring
in higher grades balance with 4 adjustment screws, minute wheel (cf. example) or complete train pink gold
Some movements of higher grades are selectively gold- and nickel plated (cf. example), but the factory records don't tell which or how many.
Dimensions
| Width | 42.5 lignes (95.87 mm) |
|---|---|
| Height | 6.7 mm |
| Stem height | 0.5 mm |
| Hands (H × M × S) | 1.93 × 1.32 × 0.26 mm |
Technical data
| Beat rate | 18,000 vph (2.5 Hz) |
|---|---|
| Lift angle | — |
| Power reserve | 35 h |
| Jewels | — |
| Shock protection | — |
| Mobile stud carrier | No |
Complications
| Self winding | No |
|---|---|
| Date | No |
| Day | No |
| Hacking | No |
| Chronograph | No |
Mainspring
| GR code | — |
|---|---|
| Height | — |
| Thickness | — |
| Length | — |
| Barrel diameter | — |
Overview
| Type | Mechanical |
|---|---|
| Manufacturer | Waltham |
| Year | c. 1888 |
| Family | — |
| Clone of | — |
Documents
None
Updated 7 days ago · 0 revisions