Mitutoyo 511-713-20 | Bore Gauge | 2-Point Inside Measuring Instrument | Range 50-150mm | Graduation 0.01mm
Part No. 511-713-20 | Range 50–150 mm | Graduation 0.01 mm | Accuracy 2 µm | 2-Point Contact | Dial Indicator Included
Product Overview
The Mitutoyo 511-713-20 dial bore gauge is designed for measuring internal bore diameters and checking taper and ovality across a 50–150 mm range. Its 2-point contact system self-centres in the bore to provide consistent comparative measurements.
The gauge uses 11 interchangeable anvils with a 50 mm sub-anvil and 4 spacers to cover the specified measuring range. The carbide contact point and carbide-tipped anvils provide wear-resistant contact for repeated inspection work.
The included dial indicator has a 0.01 mm graduation. Like other dial bore gauges, the 511-713-20 operates as a comparative measuring instrument and should be zeroed against a suitable reference before measurement. A setting ring or an outside micrometer can be used as the reference standard.
For applications requiring a wider lower-end range, the Mitutoyo 511-921-20 covers 18–150 mm.
Key Benefits
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50–150 mm measuring range for medium and larger internal bores.
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2-point self-centring contact system for consistent bore measurement.
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0.01 mm dial graduation for clear analogue readings.
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2 µm wide-range accuracy according to the supplied Series 511 data.
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0.5 µm repeatability and 1 µm adjacent error at the head.
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Interchangeable anvils and spacers for different bore sizes.
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Carbide contact point and carbide-tipped anvils for improved wear resistance.
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Ø8 mm gauge stem for compatible mounting arrangements.
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Supplied in a fitted case for storage and transport.
Who This Product Is Best For
The Mitutoyo 511-713-20 is suitable for engine rebuilding, hydraulic and pump maintenance, CNC machining, mechanical workshops and dimensional inspection applications where internal bore measurements fall within the 50–150 mm range.
It can be used by machinists checking machined bores, inspectors verifying first-off or finished components, and maintenance personnel assessing bore wear before repair or rebuilding work.
How to Use / How It Works
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Select the appropriate interchangeable anvil, spacer or sub-anvil configuration for the nominal bore size.
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Establish the nominal reference using a suitable setting ring or an outside micrometer.
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Zero the dial bore gauge against the reference dimension before measuring the workpiece.
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Insert the gauge into the bore and gently rock it to locate the minimum dial reading.
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Use the reading to determine the bore deviation from the nominal reference.
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Repeat the measurement at different depths and angular positions to identify taper, ovality or other dimensional variation.
Because the 511-713-20 is a comparative instrument, correct zeroing and a suitable reference standard are important for reliable results.
Frequently Asked Questions
What is the Mitutoyo 511-713-20 used for?
It is a dial bore gauge for measuring internal bore diameters and checking taper and ovality across a 50–150 mm range.
What is the measuring range of the 511-713-20?
The measuring range is 50–150 mm.
What is the dial graduation?
The included dial indicator has a 0.01 mm graduation.
How accurate is the Mitutoyo 511-713-20?
The supplied Series 511 data specifies 2 µm wide-range accuracy, with 0.5 µm repeatability and 1 µm adjacent error at the head.
Does the 511-713-20 include a dial indicator?
Yes. The supplied specification identifies the dial indicator as included, with a 0.01 mm graduation.
Do I need a setting ring to use a dial bore gauge?
A dial bore gauge should be zeroed against a known reference before measurement. A suitable setting ring or an outside micrometer can be used as the reference.
How many interchangeable anvils are supplied?
The supplied specification lists 11 interchangeable anvils together with a 50 mm sub-anvil and 4 spacers.
What is the difference between the 511-713-20 and 511-921-20?
The 511-713-20 covers 50–150 mm, while the 511-921-20 covers 18–150 mm. Select the model according to the bore range you need to measure.
How can I buy the Mitutoyo 511-713-20 in Saudi Arabia?
Contact General Tech Services in Dammam for pricing, availability and delivery information. You can call +966 569 289 544 or email mathews@generaltechsaudi.com.
