- Back plunger type dial gauges are suitable for mounting onto leveling machine tool tables or inspection jigs, and for use in small spaces where the graduations of standard dial gauges are difficult to see.
- Models 2960T, 2961T, 2990T-10 and 2991T-10, which use Mitutoyo’s proprietary shock-proofing mechanism, have excellent durability and shock resistance.
- Model 2990T-10 provides 0.001mm graduation.
DIMENSIONS
* The shoulder on a contact point (standard accessory) for 2960T and 2961T acts as a stop to prevent spindle overrun that may otherwise damage the indicator. For this reason, if you need to install an optional contact point with an outside diameter smaller than 7mm, use a washer (with outside diameter of at least 7mm, inside diameter of 3mm, and thickness of approx. 0.5mm) placed between the contact point and the spindle.
Metric
| Order No. | Graduation | Range (range/rev) | Accuracy | Repeatbility | Dial reading | Measuring force | |||
|---|---|---|---|---|---|---|---|---|---|
| Overall | Retrace | 1/10 Rev | 1 Rev | ||||||
| 2960T | 0.01mm | 1mm (1.27mm) | 14µm | 4µm | 8µm | — | 3µm | 50-0-50 | 1.4N or less |
| 2990T-10 | 0.001mm | 0.1mm (0.14mm) | 5µm | 2µm | 2.5µm | — | 1µm | 50-0-50 | 1.5N or less |
* Completed products inspection is performed in the vertical position (contact point downward) and the stated accuracy is guaranteed.
Inch
| Order No. | Graduation | Range (range/rev) | Accuracy | Repeatbility | Dial reading | Measuring force | |
|---|---|---|---|---|---|---|---|
| First 1 Rev / 2.5 Rev / 10 Rev | Retrace | ||||||
| 2961T | .0005” | .04” / .05” | ±.0005” / — / — | .00016” | ±.0001” | 20-0-20 | 1.4N or less |
| 2991T-10 | .0001” | .008” / .01” | ±.0002” / — / — | .0001” | ±.00005” | 4-0-4 | 1.5N or less |
* Completed products inspection is performed in the vertical position (contact point downward) and the stated accuracy is guaranteed.
Metric
Inch
Holding bar (optional)
| Order No. | øD | L |
|---|---|---|
| 21AAA166 | ø6mm | 42mm |
| 136567 | ø6mm | 81mm |
| 124625 | ø6.35mm | 81mm |
| 21AAA167 | ø6.35mm | 42mm |
| 21AAA168 | ø8mm | 42mm |
| 136568 | ø8mm | 81mm |
* øD and L: detail shown in drawing below.