Mitutoyo 511-857 Micrometer Head Bore Gauge, Range 16.0 - 24.0", Graduation .0001"
Genuine Mitutoyo stock · Fast Kuwait-wide delivery
Model No. 511-857
General Tech Services LLC — Genuine Mitutoyo Distributor, Kuwait +965 9807 4888
The Mitutoyo 511-857 micrometer head bore gauge measures large internal diameters from 16"–24" (406.4–609.6 mm) with 0.0001" graduation. Its micrometer head is mounted on the anvil, allowing the size to be set directly without requiring a matching setting ring for every dimension. Request a quote in under a minute: call or WhatsApp +965 9807 4888.
Product Overview
The Mitutoyo 511-857 is designed for accurate measurement of large internal diameters where conventional setting rings can be expensive and difficult to handle. Its micrometer head mounted on the anvil allows the required dimension to be set conveniently and accurately at the bench.
The gauge features a longer plunger stroke while maintaining its precision. A carbide contact point provides resistance to wear, while the large sponge-structure grip reduces heat transfer from the operator's hand by 50% to help maintain measurement stability.
Sub-anvils provide a wide measuring range, and optional extension rods allow the gauge to reach deeper holes. An optional inside-length standard, such as a setting ring or Inside Micro Checker, can be used to confirm the setting.
Typical applications include large bores in pump and compressor casings, pipe flanges, turbine housings and heavy fabrications. It is suitable for machine shops, power and desalination plant maintenance teams, QC inspection work and oil and gas service contractors in Kuwait.
For accurate large-bore measurement, allow the Mitutoyo 511-857 and the workpiece to reach the same temperature before measuring. Steel expands by approximately 11.5 μm per metre per °C, so at 609.6 mm a 10°C temperature difference can result in approximately 70.1 μm of dimensional change.
For a larger measuring range, the Mitutoyo 511-858 covers 24"–32".
Key Benefits
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Measures large internal diameters from 16"–24" (406.4–609.6 mm)
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Carbide contact point provides long wear resistance
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Heat-insulating sponge-structure grip reduces heat transfer from the hand by 50%
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Micrometer head setting allows large dimensions to be set without a matching setting ring
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Optional extension rods support deep-hole measurement
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Self-centring guide helps align the gauge with the true bore diameter
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Sub-anvils provide a wide measuring range
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0.0001" graduation supports fine measurement of large bores
Call or WhatsApp +965 9807 4888 for pricing and stock availability.
Who This Product Is Best For
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Machine shops checking large pump and compressor bores
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QC teams measuring bore diameter, taper and ovality
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Maintenance teams working on large industrial equipment
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Power and desalination plant maintenance teams
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Engine, pump and hydraulic rebuild workshops
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Oil and gas service contractors
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Buyers standardising on the Mitutoyo 511-857 for repeatable large-bore inspection
How to Use
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Select and fit the appropriate anvil or washer combination for the nominal bore size.
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Set the gauge to the required dimension using the micrometer head and a suitable master or optional setting standard.
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Insert the gauge into the bore and gently rock it through the diameter to locate the turning point.
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Read the deviation from the nominal setting on the indicator.
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Repeat measurements at different depths and positions when checking for taper or ovality.
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Keep the measuring faces clean and allow the gauge and workpiece to reach a stable temperature before close-tolerance measurement.
Frequently Asked Questions
What range does the Mitutoyo 511-857 micrometer head bore gauge measure?
It measures internal diameters from 16"–24" (406.4–609.6 mm).
What is the graduation?
The gauge has a 0.0001" graduation.
Is a dial indicator included?
The supplied product information specifies a 0.0001" indicator. Confirm the exact package contents when requesting a quotation.
Do I need a setting ring?
The micrometer head mounted on the anvil allows the gauge size to be set directly. A setting ring or Inside Micro Checker can be used as an optional inside-length standard for setting confirmation.
Why does the grip matter?
Heat transferred from the operator's hand can affect precision measurement. The sponge-structure grip reduces heat transfer from the hand by 50%, helping improve measurement stability.
Can the gauge measure deep bores?
Yes. Optional extension rods can be used for deep-hole measurement.
Which Mitutoyo model should I choose for a smaller or larger bore?
The 511-857 covers 16"–24". The Mitutoyo 511-856 covers 10"–16", while the Mitutoyo 511-858 covers 24"–32".
Can the Mitutoyo 511-857 be recalibrated?
The gauge can be maintained and calibrated periodically through an appropriate calibration service. For traceable measurements, use a suitable ISO/IEC 17025-accredited calibration service.
How should I store and care for it?
Wipe the measuring faces clean after use and store the instrument in its case away from direct sunlight and coolant. Avoid dropping the instrument, check the setting before use and follow an appropriate periodic calibration schedule.
How do I order the Mitutoyo 511-857 in Kuwait?
Pricing is quote-based. Call or WhatsApp +965 9807 4888 with the model number and required quantity, and General Tech Services LLC can confirm current pricing and availability.
Request Pricing & Availability
For the Mitutoyo 511-857 micrometer head bore gauge, contact General Tech Services LLC for Kuwait pricing and availability.
Call or WhatsApp +965 9807 4888 for a fast quotation.
General Tech Services LLC — Genuine Mitutoyo Distributor, Kuwait +965 9807 4888
