Automatically sets itself. Accuracy: 1/10,000 of a second. Controlling radio signal from NIST automatically adjusts clock for daylight savings time, leap year, and leap seconds. Highly visible bright second sweep hand. With NIST Traceable*. 30.5dia.x3.8Dcm.
VWR Timing range is 99 hours, 59 minutes, 59 seconds. Resolution is 1 second. Accuracy is 0.01% Two channel Visual LED Alert flip-open easel, clip, and an opening for a lanyard