Maximum Measuring Accuracy
Linear ≤ ±0.000040″ (0.001 mm)
Repeatability ≤ 0.000020″ (0.0005 mm)
Gage R & R ≤10% measuring high
tolerance bores 0.0003″ (0.008 mm)
The most universal/best value tipping type bore gage in Dyer’s offering.
Once you use Dyer’s tipping type bore gages, you will keep buying more.
Notable Features
Precision, highest accuracy available in tipping type bore gages.
Modular component sets means best value.
Handles Invar steel.
Wide spring-loaded centering bases for Gage R & R.
In wooden box.
Customized Models
Contact our office with your bore application. Many options available, i.e., ruby contacts, special centering base.
Models and Specifications
| Measuring
Range Inch (mm) |
Distance from the
Bottom “H” Inch (mm) |
Contact Point Max.
Travel Inch (mm) |
Measuring Depth | Total
Measuring Depth |
Order No.
Standard Handle with Carbide Contacts & Tool Steel Head |
| 0.24″–0.71″ (6.0–18.0) | 0.167″ (4.25) | 0.020″ (0.5) | 4.00″
101mm |
6.50″
165mm |
223-105 |
| 0.71″–6.30″ (18.0–160.0) | 0.334″ (8.5) | 0.055″ (1.4) | 5.70″
145mm |
9.72″
247mm |
223-220 |
| 6.30″–31.50″ (160.0–800.0) | 0.452″ (11.5) | 0.063″ (1.6) | 7.08″
180mm |
13.00″
330mm |
223-320 |
Each set of the 223 Series models above include two interchangeable head stocks, one handle, fixed incremental pins, and spacer washers to cover the entire specified measuring range. Indicator NOT included. Order indicator separately
Optional Accessories
| Description | Order No. |
| 90° Angle piece—2.36″ long | 223-401 |
| 19″ Depth Extension* | 223-403 |
| 30″ Depth Extension* | 223-404 |
*Only for 223-220 & 223-320
