Product Review
The Mitutoyo 511-752 bore gauge is for performing close tolerance inside diameter measurements. The gauge (511-732) has a measurement range of 1.4 to 2.5", graduations of 0.0001", and an accuracy of + or - 0.0002". The dial indicator (2923SB-10) interface provides precise and easily readable measurements in inches. The contact points of this gauge are carbide-tipped for durability. This unit has a large, hollow-structured grip to reduce heat from the operator for accurate measurements. It comes with six anvils and four spacers for taking measurements, and a cover to protect the dial. The dial is balanced and has a reading of 0-5-0. The gauge has a measuring force of 4.0 Newtons (N) or less and a guide force of 6.0N or less.
| Specifications | |
|---|---|
| Range | 1.4 to 2.5" |
| Graduations | 0.0001" |
| Accuracy | + or - 0.0002" |
| Range per revolution | 0.01" |
| Face | Dial, white face, shockproof, jeweled bearing |
| Dial reading | 0-5-0 |
| Measuring force | 4.0N or less |
| Guide force | 6.0N or less |
| Stroke of contact point | 0.047" |
| Probing depth | 6" |
Bore gauges measure holes, or bores, in a workpiece. They can measure the interior diameter of a hole at any depth, while internal micrometers can only measure to the depth of their teeth. Bore gauges are typically calibrated with a setting ring and come in two types: simple and direct-measuring. Simple bore gauges are used with a caliper to transfer the hole measurement, while the more complex gauges take the measurement directly, and display it through a vernier, dial, or digital display. Bore gauges have a two- or three-point contact, indicating how many points on the gauge head touch the inside of the bore. Two-point contacts are better at measuring ovality, while three-point contacts are used to measure lobing or triangular form error. Pistol-grip bore gauges are used for fast, single-handed operation with repeatable results from one operator to another. Bore gauges can also be used in special applications, such as measuring threads, spline pitch diameters, and deep bores.
Mitutoyo manufactures precision measuring tools, metrology equipment, and related systems. The company, founded in Tokyo in 1934, formed Mitutoyo America Corporation in 1963 with headquarters in Aurora, IL.
What's in the Box?
- Mitutoyo 511-732 bore gauge
- Mitutoyo 2923SB-10 dial indicator
- (6) Anvil
- (4) Spacer
- Dial cover
