Mitutoyo 511-417 Mechanical Blind Hole Bore Gauge, 50-150mm Range, Without Indicator

Description

The Mitutoyo 511-417 is a mechanical blind hole bore gauge with a measuring range of 50–150mm. It is designed to measure the internal diameter of a bore near its bottom, where a standard bore gauge cannot reach. As specified in the product name, this model does not include an indicator and must be used with a separate dial or digital indicator.

Key features

• Application: Specifically designed to measure the ID close to the bottom of blind holes.
• Measurement range: 50–150 mm.
• Accuracy: Guaranteed a wide-range accuracy of 4µm and an indication stability of 1µm, according to retailers like Global Test Supply and Judge Tool & Gage.
• Two-point contact system: Detects geometry problems such as ovality and taper.
• Carbide contact point: Ensures high durability and wear resistance for long-term use.
• Large, hollow grip: Reduces the effect of the operator's body heat on the measurement, thereby increasing accuracy.
• Pendulum guide structure: Improves the sliding motion of the gauge for more consistent and accurate measurements.
• Interchangeable anvils and spacers: The gauge comes with 11 anvils and 4 replacement washers to cover the full measuring range.
• Deep hole measurement: Optional extension rods are available for measuring deeper holes.