▲ Features 1. Speed ??can be used for verification, reversal protection and overspeed protection and other instruments and speed speed measuring system 2. Configure annex complete, photoelectric or mechanical, hand-held, contact and non-contact, etc. tachometer check 3. Applicable to a variety of magnetic-electric, magnetoresistive, Hall, eddy current speed sensor calibration 4. Configure specific accessories available on various aviation tachometer, marine tachometer 5. check the calibration of various types of Tacho output characteristics 6. Output standard electrical source, the secondary speed measurement instrument calibration 7. separately configured with the speed sensor signal input interface, in the absence of secondary instrument case , separate check for speed sensor (for active speed sensors provide several types of voltage drive) 8. suitable to measure research department at the provincial level or higher requirements for enterprises