Product Description
Extech 461891 High Precision Contact Tachometer with NIST Certificate
This model ships with a NIST-traceable calibration certificate (Extech part 461891-NIST).
The Extech 461891 is a high-precision contact tachometer that measures RPM and surface speed with ±0.05% accuracy.
Key Features
- 0.5 to 20,000 RPM contact
- Surface speed in ft/min or m/min
- ±0.05% of reading accuracy
- AA battery powered
Specifications
| Model | 461891-NIST |
|---|---|
| Rotation Speed (Contact) | 0.5 to 20,000rpm, ±0.05% of reading |
| Surface Speed (Contact) | 0.2 to 6560ft/min (0.05 to 1999.9m/min) |
| Dimensions | 6.7 × 2.8 × 1.5" (170 × 72 × 37mm) |
| Power | 4 × AA (1.5V) batteries |
| Warranty | 2 years |
| Weight | 9.2oz (260g) |
