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Unitas 6497
Basic Information
| Name | Unitas 6497 |
|---|---|
| Manufacturer | Unitas |
| Launch Year | 1950 |
| Caliber Family | Description 18000 A/h, pallet lever cock: Unitas 6497: open face Unitas 6498: hunter Unitas 6503: open face, date 18000 A/h, pallet lever bridge, Etachron regulator: ETA/Unitas 6497-1: open face ETA/Unitas 6498-1: hunter 21600 A/h, pallet lever bridge, Etachron regulator: ETA 6497-2: open face ETA 6498-2: hunter Related calibers Unitas 6497, Unitas 6497-1, Unitas 6498, Unitas 6498-1, Unitas 6503 |
| Is COSC certified | No |
Timegrapher
Beat rate
18,000 bph
Frequency
2.5 Hz
Lift angle
44 degrees
Reference: healthy amplitude ≈ 270–315° fully wound (>200° at 24 h); beat error ideally < 0.5 ms.
Technical Details
| Lignes Dimensions | 16.5 ‴ |
|---|---|
| Dimensions | 37.2 mm |
| Height | 4.2 mm |
| Further Measures | Mounting Diameter (Dm): 36.6mm Stem height (T): 1.85mm Mounting Height (F): 0.5mm |
| Power Reserve | 50 hours |
| Frequency | 18,000 vph |
| Jewels | 17 |
| Lift Angle | 44 degrees |
Complications and Specifications
| Shape | Round |
|---|---|
| Complications |
|
| Shock Protection | Incabloc |
| Regulator Type | Pinned Regulator (or Index Regulator) |
| Movement Type | Manual |
| Escapement Type | Swiss Lever |
| Control Type | Balance Wheel |
| Winding Type | Stem Winding (Crown) |
| Setting Type | Stem Set (Crown Pull) |
Additional Information
| Hand Sizes | 2.00 x 1.15 / 0.27mm |
|---|---|
| Hand Count | 3 |
| Country Of Manufacture | Switzerland |
| Notes | Remarks: 1950- open-face calibre Other data: balance staff: U3461 stem: W1418 mainspring / battery: Zf3016, 1.50 x 15.0 x 0.18 x 450mm balance staff ronda: 5263 (16,5) Ranfft mentioned about this caliber: There are variants with this quantity of jewels 15, 17 |
| Signature | ca. 1965: UZ, Unitas 6497, 6503, Arnex Tim Co Inc, Swiss, 17 Jewels; Incabloc (Unitas 6503) |
Compatible Parts
131 other caliber(s) share compatible parts with this caliber.
68 compatible part(s) available — Supporter feature.
Metadata
| Created At | Sep 15, 2023 |
|---|---|
| Updated At | Apr 23, 2025, 11:34:18 PM |
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