This project is an electronic tachometer made of safe and materials. It has a reasonable design and practical functions, which can help you complete the measurement work well and provide you with more accurate and reliable data. With a wide range of applications, it can easily meet the measurement needs in different situations and better serve you. Features -Color: Orange -Material: ABS, Electronics -Size: About 19.30X6.00X2.90cm/7.58X2.36X1.14inch -This is a professional and practical tachometer with stable performance and high reliability, making your use safer. -It has a wide range of uses and can meet the measurement needs in different situations. It is suitable for motors, electric fans, automobiles, etc. -It has different functions, such as unit conversion, data storage, average measurement, etc. -The product is easy to operate and maintain, and has performance. -You can buy this professional and practical electronic tachometer . Package list: 1 x host, 2 rollers, 2 x measuring contacting heads, 1 x extension rod, 1 x instruction manual