The new tachometer/length meter from Hoto Instruments (www.hoto-instruments.com) features four measuring modes: real time, maximum, minimum and mean. It has an auto measuring range from 0 to 20,000 rpm with resolution up to 0.01 at low speeds. It can measure surface speed and distance up to 2,000 fpm with an optional 12 in. wheel. This battery operated gauge measures in 12 different units: rpm, fpm, ipm, mpm, ypm, cpm, inch, yard, foot, meter, centimeter and total revolutions. The unit has last reading recall and 19 data memory plus low battery indicator. It has a metal housing, 5 digit LCD display, carrying case including multiple tips, optional wheel and AA batteries.