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The No. 829 Series, full-ball gages are used for general work.
Small Hole Gages
These small hole gages are well balanced tools that are ideal for accurately measuring small holes, slots, grooves, and recesses in all kinds of work. They all feature:
- Hardened-ball measuring surface with two-point contact
- Radius on each gage is less than the minimum diameter to be measured, which provides the two-point contact necessary for maximum accuracy
- Smooth, sensitive adjustment for better feel, giving more accurate measurements
- The adjustment of the gage beyond their range is restricted by a safety stop that prevents breakage
Accurate measurements are obtained by slightly "rocking" these gages in the hole to be measured. This will guarantee contact at the true diameter. The final size is then obtained by measuring over the ball contacts with a micrometer.
Small Hole Gages - No. 829 Series
| Catalog No. |
EDP No. |
Description |
List Price |
| 829A |
53070 |
.125-.200” (3.2-5.1mm) Range, 2 7/8” (75mm) Length |
25.00 |
| 829B |
53071 |
.200-.300” (5.1-7.6mm) Range, 3” (80mm) Length |
25.50 |
| 829C |
53072 |
.300-.400” (7.6-10.2mm) Range, 3 3/8” (85mm) Length |
25.50 |
| 829D |
53073 |
.400-.500” (10.2-12.7mm) Range, 3 1/2” (90mm) Length |
26.50 |
| S829EZ |
53074 |
SET of 4: One each of 829A/B/C/D, in Case |
108.00 |
| S829EZZ |
55391 |
Plastic Case only for S829EZ |
2.30 |
J.W. Donchin Co.
 Ph: 773-261-2182 • Fax: 773-261-2867 • Email: sales@jwdonchin.com
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