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Basic uses of stopwatch:
mechanical stopwatch is widely used in industrial and mining enterprises, scientific research, national defense and military, medical and health, and cultural and sports systems. Especially adopted by the majority of primary and secondary schools nationwide. The necessary products regulated by the Ministry of Education to meet the standards of schools maintain a stable market share in China.
Mechanical stopwatch (504 type), mechanical stopwatch (diamond), mechanical stopwatch wholesale, mining stopwatch and stopwatch are divided into stopwatch and mechanical stopwatch according to different braking methods. Mechanical stopwatch belongs to the category of mechanical chronograph, watch core adopts stainless steel spring, single metal light torsion pendulum, nickel-based alloy hairspring and anchor longitudinal mechanism. The movement is equipped with 13 gems, and the mechanical stopwatch can keep working normally in the temperature range of-10℃ to + 45℃.
Mechanical stopwatch (504 type) technical parameters:
1. Name: mechanical stopwatch
2. Minimum scale value: 1/10s
3. Minute needle: 15 seconds/Circle
4. Second hand: 30 Seconds/Circle
5. Continuous travel time: 6h
6. Size: Platinum 50 small x70x16mm
7. Use environment:-10 ℃ ~ +45 ℃;≤ 60% RH
8. Implementation Standard: QB/T 153-2006
9. Reading method: mechanical stopwatch method small dial means minutes, large dial means seconds, and large dial means 30 seconds in a circle. To determine whether it is the first 30 seconds or the last 30 seconds, you need to refer to the half mark between small dial and two minutes. If the small dial watch needles does not reach the half mark, it is a minute + small dial seconds. If small dial watch needles exceeds the half mark, it is a minute + (large dial display number +30) seconds. How many reads are displayed on the LCD screen of the electronic stopwatch.
Update time：20210921142348
