A tachometer is a device that determines the angular speed of a rotating shaft in revolutions per minute (RPM). The Extech 461750 Tachometer has surface wheels that measure the contact surface speeds of rotating (10 to 9,999 RPM) and moving (3 to 6,560 ft/min; 1 to 1999.9 m/min) objects. Complete with a 9-volt battery and surface wheels.
| Rotation Speed (Contact) | 10 to 20,000rpm |
|---|---|
| Rotation Speed (Contact) Basic Accuracy | ±(0.1% of reading + 2 digits) |
| Rotation Speed (Contact) Max Resolution | 0.001rpm |
| Sampling Rate | 1sec>60rpm, >1sec>10 to 60rpm |
| Surface Speed (Contact) | 3 to 6560ft/min, 1 to 1999.9m/min, 1 to 5,000yd/min |
| Surface Speed (Contact) Basic Accuracy | ±(0.1% of reading + 2 digits) |
| Surface Speed (Contact) Max Resolution | 0.0001ft/min |
| Certifications | CE |
| Dimensions | 5.87 × 1.97 × 1.3" (149 × 50 × 33mm) |
| Power | 1 × 9V battery |
| Warranty | 2 years |
| Weight | 5oz (142g) |
