Our mechanical contact tachometers feature an easy to read and large dial as well as having a range of contact adapters to make them both easy and convenient to use. Due to their design they can be used in areas where electronics are not suitable. They can be used with one hand operation and are encased in rubber to give excellent protection and grip feel.• Metric and Imperial options. • No batteries required. • Over-sized 3 Inch Dial (70 mm) uses 2 separate color scales making reading RPM and Surface Speed quick and easy. • Accuracy of ± 0.5% Full Scale. • 3-Position Range Selector Switch provides highest possible resolution for each application. • Memory button holds pointer in last position until reset• Speed of rotating equipment such as fans and wheels. • All rotating components such as rollers where access is available. • Linear speed of conveyors and drive belts. • Speed of rope or cable in elevators and winchesBest Accuracy = ±0.5 %Category = ContactDisplay Type = DialDimensions = 155 x 85 x 55mmWeight = 250gHeight = 55mmLength = 155mmMaximum Operating Temperature = +40°CMaximum Speed = 10000rpmMinimum Operating Temperature = 0°C