| Scale Range | 300 RPM - 3500 RPM |
| Mounting | Standard 3-1/8 Inch Instrument |
| Weight | 13 Ounces |
| Accuracy | +/-25 RPM, 1000 RPM to 3000 RPM |
| Scale Range | 300 RPM - 3300 RPM |
| Mounting | Standard 2-1/4 Inch Instrument |
| Weight | 11 Ounces |
| Accuracy | +/-25 RPM, 1000 RPM to 3000 RPM |
