Check the listing for details. Electro Sensors AP100 Tachometer (Missing Front Screen) 800-082005. Condition: New – Open box. Listed at 150.00 USD. Item is new and complete but is MISSING FRONT SCREEN Experience precise measurements with the Electro Sensors AP100 Digital Tachometer, a must-have tool for professionals in the business and industrial sectors. Designed for accuracy, this tachometer is ideal for a variety of applications including monitoring motor speeds and personnel tracking, making it an essential instrument in test, measurement, and inspection tasks. The AP100 model, with the part number 800-082005, offers reliable performance without the front screen, catering to your basic measurement needs. Its straightforward interface and robust construction make it a practical choice for both experienced technicians and those new to the field of test meters and detectors.