Vintage Soviet SLAVA Stopwatch Chronometer Mechanical (Split Second SDS--pro)

Description

Vintage SLAVA Stopwatch Soviet Vintage Chronometer Mechanical (Split Second SDS-pro) 1978 year
Slava Stopwatch SDSpr-1-2-000
Factory: Second Moscow Watch Factory 1978 year
The Slava stopwatch allows you to measure time intervals with an accuracy of 1/10 second.
To ensure such high accuracy, the mechanism of this stopwatch is made in the highest class.
Technical characteristics of the SDDSpr-1-2 stopwatch:
Accuracy class 2. Movement caliber 54 mm. The number of stones 20.
The duration of the mechanism from one full spring plant is at least 8 hours.
The winding frequency during continuous operation once every 3 hours
Duration of a full turn of the hands of the stopwatch SDS pr-1-2:
- second (main and auxiliary) 30 s;
- minute 30 minutes
Scale Price:
- second 0.1 s;
- minute 0.5 minutes
Number of scale divisions:
- second 300;
- minute 60.
The period of balance fluctuations is 0.2 s.
The movement of the second hands is discrete with an interval of 0.1 s.
The average error of the SDSpr-1-2 stopwatch at a temperature of (20 ± 5) ° C in 30 minutes 0.4 s.
Operating temperature -40 ... + 40 ° С.
Overall dimensions of a stopwatch SDSpr-1-2:
- case diameter 65 mm;
- body height with glass 23.4 mm.
Weight 0.23 kg
With original box and document
All details you can see in the pictures .
Working condition : stopwatch works well, tested and served.
Cosmetic condition is very good .
See the pictures . All the pictures are actual.
If you have any question with delivery or about item, please let me know . Thank you .