exportdept@stopwatchsh.com
Shanghai Minhang District 2F, Building 6, No.1238 Xinyuan Road, Shanghai, China
How to read a stopwatch and what to do with it
The stopwatch approach：
Read the circle, that is the number of minutes, and then add the minutes and seconds of the large dial, that is the final number. But note that the large dial circle is 30s and the small dial has a 0.5 minute scale.
Large dial a grid (data indication value) for a second, such as from 60 to 5 divided into 5 large grid, so that each large grid that is 1 second, and each large grid is divided into 5 small grid, which is the value of its graduation, that is: 0.2 seconds; small dial a grid (data indication value) for 1min, that is, from 30 to 5 divided into 5 large grids, so that each large grid is the value of the graduation, that is, 1min. small dial one week Measurement value 30min.
The stopwatch is a common measuring instrument, also known as a mechanical stopwatch, consisting of a pause button, a clockwork handle, a minute hand, etc. It uses the isochronous nature of the pendulum to manipulate the rotation of the watch hand to keep time. The precision of a stopwatch is generally 0.1-0.2 seconds, and the timekeeping deviation is usually caused by the opening and stopping of the watch.
Specifications for the use of stopwatches：
1、The stopwatch should not be wound too tightly when in use to prevent breakage.
2、After application, the watch should be started first so that the clockwork is completely relaxed .
3、It is very likely that the time counted by the minute hand and the hand rotating one week will be different for different models of stopwatches, so be careful when applying them.