Sper Scientific professional laboratory stopwatches use only highly accurate quartz crystal movements guaranteed to be within 3 seconds per day. A sonically welded case ensures excellent water resistance and a large 5/8" display for good visibility. Counts up to 24 hours with resolution of 1/100 second for the first 40 minutes and 1-second resolution thereafter. Features a lap function, alarm clock, and a calendar. Includes button cell battery. Part No.: 131-0714.
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2 months ago
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