Mitutoyo 511-159 | Dial Bore Gauge | Graduation 0.0005 inch | Accuracy ±.0002 inch | Range 0.7 to 1.4 inch
Part No. 511-159 | Mitutoyo Series 511
Product Description
The Mitutoyo 511-159 dial bore gauge is designed for precise internal diameter measurement from .7–1.4" (17.78–35.56 mm). Its 2-point contact system self-centres inside the bore, allowing the gauge to be gently rocked through the measuring position to identify the minimum reading.
A dial bore gauge can provide more than a single bore-size reading. By measuring at different depths and orientations, the 511-159 can help identify variations in bore diameter, taper and ovality. This makes it useful for inspecting cylinders, sleeves, bushings and other precision-machined components.
The 511-159 uses interchangeable anvils to cover the .7–1.4" measuring range. Its carbide contact point is designed for repeated dimensional inspection, while the ø3/8" gauge stem provides mounting for the included dial indicator.
The included dial indicator has .0005" graduation, and the gauge has ±.0002" accuracy. The dial is protected by a cover to help shield it from knocks and general workshop handling. Extension rods are available for applications requiring additional measuring depth.
Because the 511-159 is a comparator-type instrument, it must be zeroed against a known reference before taking measurements. A suitable setting ring or an outside micrometer can be used to establish the nominal reference dimension.
For larger bore sizes, see the Mitutoyo 511-160, which covers 1.4–2.5".
Key Benefits
Compact bore range: measures internal diameters from .7–1.4" (17.78–35.56 mm).
Self-centring 2-point contact: helps maintain consistent positioning inside the bore.
Bore condition inspection: allows measurements at different depths and orientations to identify taper and ovality.
.0005" dial graduation: provides clear inch-based readings for dimensional inspection.
±.0002" accuracy: supports precision bore measurement within the specified range.
Carbide contact point: provides a durable measuring contact for repeated inspection.
Protected dial indicator: the indicator cover helps protect the dial during workshop use.
Flexible depth measurement: compatible extension rods can support deeper-bore applications.
Need a price or delivery time for the 511-159? Call +965 9807 4888 for a fast quote.
Who This Product Is Best For
The Mitutoyo 511-159 is suited to engine rebuilding workshops, hydraulic and pump service facilities, CNC machine shops, maintenance teams and quality control departments working with bore diameters from .7 to 1.4".
It is useful for first-off inspection, in-process dimensional checks, bore wear assessment and verification of machined components. The 2-point self-centring system also makes it useful when checking whether a bore remains consistent along its depth.
How to Use
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Select and install the appropriate anvil and any required spacers or sub-anvil for the nominal bore size.
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Zero the bore gauge using a suitable setting ring or an outside micrometer set to the nominal dimension.
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Insert the gauge carefully into the bore without forcing the measuring contact.
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Rock the gauge gently through the measuring position and identify the smallest dial reading.
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Compare the reading with the established reference dimension to determine the bore deviation.
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Repeat the measurement at different depths and orientations when checking for taper or ovality.
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Record the measurement results according to your inspection procedure and verify the instrument against a suitable reference when required.
Frequently Asked Questions
What is the Mitutoyo 511-159 used for?
The 511-159 is used to measure internal bore diameters from .7–1.4" (17.78–35.56 mm). It can also be used to inspect bore taper and ovality by comparing readings at different depths and orientations.
How accurate is the Mitutoyo 511-159?
The Mitutoyo 511-159 has a specified accuracy of ±.0002".
What is the graduation of the 511-159 dial indicator?
The included dial indicator has .0005" graduation for inch-based bore measurement and inspection.
Does the 511-159 use interchangeable anvils?
Yes. Interchangeable anvils are used to cover the specified .7–1.4" measuring range.
Can the 511-159 measure deeper bores?
The standard gauge is designed for the specified bore-measurement range, and compatible extension rods are available for applications requiring additional measuring depth.
Do I need a setting ring to use the bore gauge?
The gauge must be zeroed against a known reference before measurement. A suitable setting ring or an outside micrometer can be used to establish the nominal reference dimension. Setting rings are available separately and can be quoted with the gauge.
Can the 511-159 check taper and ovality?
Yes. Take readings at several depths and orientations within the bore. Variations in the readings can indicate taper or ovality.
What is the difference between the Mitutoyo 511-159 and 511-160?
The 511-159 covers .7–1.4", while the 511-160 covers 1.4–2.5". Select the model according to the internal diameter range of the feature being inspected.
How do I buy the Mitutoyo 511-159 in Kuwait?
Call Al Belad General Tech Services on +965 9807 4888 or email mathews@generaltechkuwait.com for pricing and delivery information.
