Waltham 1894 open-face
Mechanical
c. 1894
No photos yet
Notes
1894-1936
open face calibre
bimetallic screw balance, Breguet hairspring
entry grades with brass escape wheel
in higher grades steel escape wheel, balance with 4 adjustment screws, minute wheel or complete train pink gold
negative stem mechanism (US market)
By pulling a hook near the stem also the uncased movement can be switched to winding.
attention: right handed crown-wheel screw
Dimensions
| Width | 38.8 lignes (87.53 mm) |
|---|---|
| Height | 5.2 mm |
| Stem height | — |
| Hands (H × M × S) | 1.5 × 0.8 × 0.19 mm |
Technical data
| Beat rate | 18,000 vph (2.5 Hz) |
|---|---|
| Lift angle | — |
| Power reserve | 42 h |
| Jewels | — |
| Shock protection | — |
| Mobile stud carrier | No |
Complications
| Self winding | No |
|---|---|
| Date | No |
| Day | No |
| Hacking | No |
| Chronograph | No |
Mainspring
| GR code | — |
|---|---|
| Height | 15.5 mm |
| Thickness | 0.17 mm |
| Length | — |
| Barrel diameter | 1.7 mm |
Overview
| Type | Mechanical |
|---|---|
| Manufacturer | Waltham |
| Year | c. 1894 |
| Family | — |
| Clone of | — |
Documents
None
Updated 7 days ago · 0 revisions