Thomas 1042 Traceable ABS Plastic Shockproof and Waterproof Stopwatch with LCD Display, 0.01 percent Accuracy, 2-3/8″ Length x 2-1/8″ Width x 1/2″ Thick
General-purpose LCD digital stopwatch times to 24 hours. Features include: single-action, time-out, cumulative-split, and continuous timing. Timing resolution is 1/100 of a second for the first 30 minutes, then continues timing to 23 hours, 59 minutes, 59 seconds, with a 1-second resolution. O-ring-sealed and shock-proof ABS plastic case is ideal for lab and plant use.