Digital Photo Laser Tachometer Non Contact Tach RPM Meter &#10004;Measures the rotational speed with a visible red light beam from a powerful LED &#10004;High intensity class II laser measures from 2.5 - 99,999 RPM &#10004;Extra large 5-digit LCD display, high accuracy of +/- 0.05% &#10004;Auto zero adjustment, stores last, minimum, and maximum readings