Check the listing for details. Tachometer Or Speed Indicator. Condition: Used. Listed at 38.50 USD. The tachometer or speed indicator is a digital tool used for measuring the speed or tachometer reading in various industrial or automotive settings. This device provides accurate and reliable readings for monitoring and controlling the speed of machinery or vehicles. With its user-friendly interface and precise measurements, the tachometer or speed indicator is essential for ensuring optimal performance and safety in a range of professional applications.