365510-NIST / Extech Digital LCD Stopwatch/Clock plus Calendar & Alarm with NIST Calibration The Extech 365510-NIST is a digital stopwatch and clock. This sporty, yellow stopwatch has a water-resistant housing, ...
365515-NIST / Extech Stopwatch/Clock & Backlit Display Digital LCD Stopwatch with NIST Calibration The Extech 365515-NIST is a digital stopwatch and clock. This stopwatch features a 12 or 24 hour clock format and ...
365535-NIST / Extech Digital Decimal Stopwatch/Clock, includes ISO Certificate User-selectable resolutions of 1/100 of a second, 1/1000 of a minute and 1/100,000 of an hour
HW30-NISTL / Extech Humidity/Temperature Stopwatch with Limited NIST.Stopwatch/chronograph mode with 1/100 second resolution.99 lap counter with 30 lap/split memory.