The MITUTOYO 511-703 Bore Gauge (50–150mm) is a high-precision internal measuring instrument designed for accurate inside diameter (ID) measurement of bores, cylinders, and holes in machining and industrial applications.

This standard type bore gauge (Series 511) offers a measurement range of 50–150mm, making it ideal for medium to large bore inspection. It features a 2-point contact system with interchangeable anvils, allowing precise measurement across a wide range of sizes.

The gauge is equipped with carbide-tipped measuring faces, ensuring long-lasting durability and consistent accuracy even in heavy-duty usage.

This model is typically supplied without a dial indicator, allowing users to pair it with their preferred indicator for customized measurement setups. It includes multiple anvils and spacers, enabling flexible configuration for different bore sizes.

Designed for precision and reliability, the 511-703 is widely used in quality control, machining, and engine inspection tasks.

⚙️ Key Features

Model: 511-703 (Series 511)
Range: 50–150mm
Type: Standard bore gauge (without dial indicator)
Accuracy: ±0.002mm (2µm)
Indication Stability: 0.001mm (1µm)
Contact System: 2-point measuring
Anvils: 11 interchangeable anvils
Spacers: 4 included for range adjustment
Measuring Faces: Carbide tipped for durability
Stem Diameter: Approx. 8mm
Optional Accessories: Extension rods for deep hole measurement

🛠️ Applications

Internal diameter (ID) measurement of bores
Engine cylinder inspection
Precision machining & fabrication
Automotive and aerospace measurement
Quality control & inspection

MITUTOYO 511-703 Bore Gauge 50–150mm | Precision Internal Diameter Measuring Tool (Without Dial Indicator)

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