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Extech Instruments
Stopwatch
Extech 365510 Digital Stopwatch w/Calendar and AlarmThe Extech 365510 Digital Stopwatch w/Calendar and Alarm is available with standard factory calibration or with NIST Calibration Certification (adds 5 days to product lead time). NIST certification offers a traceable certificate that satisfies ISO & other regulatory requirements for product accuracy traceability to nationally recognized reference standards.
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