Hand Tools
Bore gages
Bore gages and inside micrometers
They accurately measure the inside diameters of bores, bushings, cylinders and liners, and also detect out-of-roundness and taper.
The electronic 3-point AccuBore is self-centering and operates one-handed; there are also tubular inside micrometers and dial bore gages for quick comparison.
Interchangeable heads and rods cover a very wide range with a single instrument.
Main features
Measures inside diameters accurately
3-point self-centering AccuBore
Interchangeable heads and rods
Brand
Typical applications
- Inside diameter measurement
- Bore and bushing inspection
- Taper checking
- Inspection of cylinders and liners
- Out-of-round measurement
- Hole tolerance control
- Metrology laboratory
- Production quality control
- Tooling and die making
Featured products
| Product | Type | Description | Ranges |
|---|---|---|---|
| 781 AccuBore® | Electronic pistol-grip bore gage | Trigger with self-centering 2- and 3-point contact; mechanically actuated parallel anvils that deliver constant pressure and more accurate readings, with Go/No-Go lights and wireless data output. | 0.080"–8" (2–200 mm) |
| 770BXT | Electronic micrometer bore gage | Digital inside micrometer with wide range without changing anvils, IP67 protection, carbide surfaces, and RS232 / USB / wireless output; resolution of 0.00005" (0.001 mm). | Depends on model |
| 78XT | Mechanical micrometer bore gage | 3-point inside micrometer with extended travel and ground contact points that seat faster and more accurately; individual or in sets. | 0.080"–12" (2–300 mm) |
| 82 | Dial bore gage | 2-point type with adjustable-range screw and centralizing plungers (3-point contact); ideal when out-of-roundness and cylindricity matter. | Depends on set |
| Fractional dial bore gage | Extended-range dial bore gage | Fractional version for checking diameters beyond the range of the 82 bore gage. | 1½"–12⅛" (38–317.5 mm) |
| Accessories | Bore gage accessories | Interchangeable contacts, data output cables, Bluetooth accessories, setting ring gages and measuring heads. | — |
Note: The data shown is for reference only and may vary depending on the model, the manufacturer and the conditions of use.
Related products
CalipersOutside, inside, depth and step measurement, with digital or vernier reading.
MicrometersHigh-precision outside measurement, with carbide faces and electronic models.
Inside and depth gagesDepth of holes, slots and steps.
Indicators and dial gagesDial and digital indicators for tolerance verification.
SquaresSquareness and right-angle verification in the shop.