Cole-Parmer Contact Tachometer with LED Display

two convex tips, one concave tip, 3 1/2''L (8.8 cm) extension shaft, 6'' (15.2 cm) linear speed wheel, two AA batteries, NIST-traceable calibration report supplied by the manufacturer, and carrying case.

主要特点

Dial in any one of the 16 measuring modes — these tachometers calculate the readings for you! Select the LCD model for use in direct sunlight, or choose the LED model for easy reading in dim lighting. Both models feature a large memory capacity — use the memory button to recall maximum, minimum, and the last ten readings. Low-battery indicator notifies user of battery life.