GAUGE-01 Field No. 0412
| Position | Rate s/d | Amp. ° |
|---|---|---|
| Dial up | +1.2 | 298 |
| Dial down | +0.6 | 294 |
| Crown down | +1.6 | 271 |
| Crown left | −0.9 | 268 |
| Crown up | −0.4 | 274 |
- Mean rate
- +0.4 s/day
- Spread
- 2.5 s
- Limit
- ±2.0 s/day
- Result
- Within limit
REF. GAUGE-01Field Instrument / Series 1
Mechanical watches made the way a machine shop makes gauges. Every GAUGE is regulated to ±2 seconds a day and checked against a calibration standard before it leaves the bench.

02The range
Different cases, same acceptance limit. Every reference is regulated in five positions and has to hold ±2 seconds a day before it ships.
All watches
The everyday instrument. Matte black dial, faceted lume-filled hands, bead-blasted steel.

A diver built like a depth gauge. 120-click bezel, screw-down crown, signal-orange hand.

Hand-wound and thin. A dial printed like a vernier scale, for the wrist that works close.
03Calibration
A watch keeps different time depending on how it lies. Each GAUGE spends a day in each of five positions on the timegrapher, and every rate has to land inside the band. The record goes in the box.

| Position | Rate s/d | Amp. ° |
|---|---|---|
| Dial up | +1.2 | 298 |
| Dial down | +0.6 | 294 |
| Crown down | +1.6 | 271 |
| Crown left | −0.9 | 268 |
| Crown up | −0.4 | 274 |
04Service
A calibration only holds until something changes it. Send your GAUGE back once a year and we run the five positions again, free, against the same limit. Every fifth year it gets a full service.
| Year | Mean rate | Note |
|---|---|---|
| Year 0 | +0.6 s/day | Delivery record |
| Year 1 | +0.8 s/day | |
| Year 2 | +1.1 s/day | |
| Year 3 | +1.3 s/day | |
| Year 4 | +1.6 s/day | |
| Year 5 | +1.9 s/day | Before full service |
| Year 5 | +0.3 s/day | After full service |
| Year 6 | Scheduled | |
| Year 7 | Scheduled | |
| Year 8 | Scheduled | |
| Year 9 | Scheduled | |
| Year 10 | Scheduled | Full service |
Work orderAll references
Every year
Five positions, 24 h each, on the bench that signed it off. The result goes on its record.
Every 5 years
Stripped, cleaned, oiled and regulated back to ±2 s/day. New gaskets, pressure tested.
5 years
Parts and labour, counted from the date on the delivery record.
21 days
Shipped both ways at our cost. The updated record comes back with it.