Bore Gauges Overview
When precision measurement is mission critical, a bore gauge is one of the most important tools you can add to your arsenal. Accurate ID readings ensure parts fit together correctly, meet tolerance requirements, and perform as designed. Whether you are checking a finished hole, verifying a honed surface, or confirming cylinder dimensions, high-quality bore gauges give you confidence that your measurements are trustworthy. At Haas Tooling, you’ll find a selection of bore gauges built for precision, durability, and ease-to-use.
Types of Bore Gauges
Haas Tooling offers a range of bore gauges to suit different measurement needs. Dial bore gauge options use a mechanical indicator to show variations in diameter as the gauge contacts the bore surface. Dial-based gauges are rugged, easy to read, and ideal for repeat checks on production parts, or setup verification in the machine shop. They’re the standard for reliable performance when you need quick confirmation of internal dimensions.
For more advanced workflows, a digital bore gauge brings enhanced readability and precision to the equation. With electronic displays, these gauges deliver instant, easy-to-read measurements and often include features like data holding and metric/imperial switching. Digital options reduce interpretation errors and help operators capture exact readings more efficiently. They are particularly useful in environments where documentation and traceability are important.
Why Precision Matters
Whether you choose dial or digital, bore gauges help you verify that bores meet design specifications. Accurate measurements ensure that mating parts assemble correctly, seals and bearings fit properly, and clearances meet engineering requirements. In engine work, for example, precise bore measurement is critical for piston ring sealing and oil control. In industrial components, tight internal tolerances can mean the difference between smooth operations and premature wear.
Choosing the Right Gauge
When selecting a bore gauge, consider the diameter range you need to measure, the level of precision required, and whether your workflow benefits more from mechanical simplicity or digital features. Haas Tooling’s range of bore gauges includes options to cover common diameters and measurement styles to match your inspection tasks.
Explore our precision bore gauges and find the tool that gives you repeatable, accurate internal measurements for every job.
Bore Gauges Details
Haas Tooling offers a complete range of bore measuring tools, with a variety of digital, mechanical, and dial designs. With three unique styles, each offers its own method and special features for accurately and precisely measuring bores.
Balanced: Negative values on one side of zero, and positive values on the other
Continuous: The value keeps ascending until the dial returns to zero
- Inch (U.S. only) and metric versions available
- Wide selection of ranges for large and small parts
- Large dial or digital display for easy reading
- Carbide, ceramic, and stainless-steel contact points for durability
Snap Bore Gauges - Digital Only
Haas Snap Bore Gauges are designed for accurately measuring the bore diameter of parts and features. All Haas snap bore gauges have three contact points for better accuracy and precision when measuring round holes. The anvils are made of carbide to ensure a long service life.
- Carbide measuring tips
- Dual-dimensioned calibration ring
- 330° Display rotation
- Resolution: 0.00005 in \ 0.001 mm
- Tolerance setting for quick GO/NO-GO checking
- Economic grip and handle for quick engagement and disengagement of contact points.
- Battery Type: CR2450
- IP rated for dust and liquid resistance
3-Point Bore Micrometers - Standard Only
3-Point bore Micrometers are designed to measure inside-hole diameters. 3 points extend to make contact with the inside diameters of a hole and provide an accurate reading. Haas 3-point bore Micrometers include setting rings and extension rods for reaching deeper holes.
- Carbide anvils for wear resistance and long service life
- Ratchet stop thimble
- Includes Setting Rings for zero-point adjustment
- Hardened, ground, and lapped spindle for ultimate accuracy
- Available with extension rods
- Made in accordance with DIN 863 standard
- Graduations available in 0.005 mm, 0.001 mm, 0.0002 in,
and 0.0001 in
Dial Bore Gauges
Dial Bore Gauges are available in a wide variety of lengths and ranges. These gauges feature carbide anvil tips for long service life.
- Inch graduations (U.S. only): 0.0005" standard, 0.0001" high resolution
- Metric graduations: 0.01mm standard, 0.001mm high resolution
- Measure IDs from 0.4" (10mm) up to 2.4" (60mm) with standards sets, and up to 6" (160mm) using the extensions supplied with the full kit
- Depth reach of up to 6" \ 150mm
- Carbide & ceramic anvils available
- Both balanced and continuous dial numbering options are available
Bore Gauge Videos