Fisher scientific traceable Digital stopwatch ,2.5"LX3"WX.75"H

Single-action timing, time-in/time-out, continuous timing, and cumulative split functions.Handheld with rugged ABS plastic case.Certifications: Individually serial-numbered Traceable Certificate is provided from an ISO 17025 calibration laboratory accredited by A2LA. It indicates traceability to standards provided by NIST.Includes: Battery (where required) and lanyard.Timer Range: 10 hours.Accuracy: 0.0005%.Display: Single-line LCD, 3/8 in. H.Power Supply: 4-year silver oxide.Key Features: Fail-safe reset prevents accidental reset to zero. Operates from 0° to 59°C (32° to 138°F).