Thomas 1034 Traceable ABS Plastic Dual-Display Digital Stopwatch, 0.0005 Percent Accuracy, 3" Length x 2-1/2" Width x 3/4" Thick

Precise, traceable timing for enzyme tests, viscosity measurements, animal studies, and all timed lab tests. Made for scientists in industrial, educational, hospital, and governmental labs who insist on the finest instrumentation. Engineered for ease of operation, accuracy, and reliability. To assure accuracy an individually serial-numbered Traceable Certificate is provided from our ISO 17025 calibration laboratory accredited by A2LA. It indicates traceability to standards provided by NIST (National Institute of Standards and Technology). Quartz-crystal design is accurate to 0.0005 percent-over 100 times more accurate than other stopwatches. Functions include single-action, time-out, interval-split, cumulative split, continuous roll-over timing, and countdown alarm timing. Resolution is 0.01 second. Times to 9 hours, 59 minutes, 59 seconds, and 99 hundredths. Dual display shows cumulative and interval split. Features eight recallable memories, plus fastest and slowest lap times. Repeat timer provides repeat function of countdown alarm timing. Set countdown time from 10 hours to 1 second. When zero is reached, timer alarms and repeats countdown from the programmed time. Repeat cycle automatically continues until stopped. Display count-box shows how many times the cycle has been repeated. LCD screen continually displays time remaining to zero. Tough, water-resistant ABS plastic case features tongue and groove craftsmanship and O-ring construction to seal out moisture, dust, and fumes encountered in harsh lab, plant, or field environments. Measures 3" length by 2-1/4" width by 3/4" thick. Weight is 2-1/2 ounces. Lanyard is 48 inches. Supplied with individually serial-numbered Traceable Certificate. Replacement battery Cat. No. 1005.