三、秒表的检定方法秒表的检定过程就是将秒表与有足够精度的精密钟进行示值比较。任何时钟都可以当作测定时间间隔有效长短的标准钟,只要这种时钟的钟差的综合影响和钟差的变动量每昼夜都不超过5秒(钟差不能大于3秒)。这样的时钟在30分钟内(一般秒表能测出的最大时 Third, the test method of the stopwatch The test of the stopwatch is the stopwatch with precision enough precision clock for comparison. Any clock can be used as a standard clock for measuring the effective length of an interval, provided that the combined effects of clock skew and clock skew vary no more than 5 seconds each day and night (the clock skew can not be greater than 3 seconds). Such a clock within 30 minutes (the average stopwatch can measure the maximum time