best mechanical stopwatch wind up stopwatch mechanical stopwatch for sale mechanical stop watches

30 minutes in the outer ring in 60 seconds
- Minimum scale value: 1/5s
- minute hand: 30 minutes / circle
- Second hand: 60 seconds / circle
- Continuation of travel time: 6h
- number of drills; 13 drills
- Pause: button
- Size: 50 small x 70x16mm
-60 seconds with pause
- 30 minutes/60 seconds per minute for each minute/second of the minute hand
- Minimum scale value: 0.2 seconds
- Continued travel time: 6 hours

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