Continuous and accurate readings from 5 to 99,990rpm
Measure rpm from 5 to 99,990rpm with microprocessor quartz crystal accuracy of 0.05-percent
Large LED display updates 1/sec (rpm<60)
Resolution: 0.1rpm (5 to 1000rpm), 1rpm (1000 to 999rpm), 10rpm (10,000rpm to 99,990rpm)
Unique design permits rpm measurements of a one hole gear or disk eliminating the need for special gears;

Technical Details

Size (LWH): 5.7 inches, 4.3 inches, 2.6 inches
Product Details
Product Dimensions: 5.7 x 4.3 x 2.6 inches
Shipping Weight: 0.65 pounds (View shipping rates and policies)
ASIN : B000TKIPFI