Stop watch mechanical (SDSPR-1-2-000) with checking Ukrmetrteststandart. + Passport
Two-arrow the summarizing operation of the mechanism of management of shooters with the interrupted work of a clockwork. Caliber of the mechanism of 54 mm. Quantity of stones 20. Class of accuracy 2. An average error in 30 minutes +-0.4 sec. the 2nd Moscow watch factory. In working order. Feature of a stop watch - the frequency of balance is 36000 semi-fluctuations an hour. This frequency allows to measure time intervals to within 1/10 seconds. For ensuring such high precision the mechanism of this stop watch is also made on the highest class. The scheme of the mechanism "is borrowed" from the Swiss firm Lemania (nowadays - Montres Breguet).