Mitutoyo 122-142 Blade Micrometer, Carbide-Tipped Blade 25-50mm, 0.4mm Blade
Part Number: Mitutoyo 122-142
The Mitutoyo 122-142 blade micrometer features blade-shaped anvil and spindle faces with a 0.4 mm carbide-tipped blade designed to reach grooves, keyways and narrow slots that standard flat-faced micrometers cannot access. It measures from 25–50 mm with 0.01 mm graduation. Request a quote in under a minute - call or WhatsApp +965 9807 4888.
Flat micrometer faces can be too wide for grooves, keyways and narrow slots, causing the measurement to land on the shoulder instead of the feature itself. The Mitutoyo 122-142 solves this with blade-shaped anvil and spindle faces that reach the bottom of the groove.
Its non-rotating spindle keeps the blade parallel to the slot as it closes, helping prevent twisting or scoring of the part. The 0.4 mm carbide-tipped blade provides resistance to wear and chipping when measuring hard or abrasive materials.
With a 25–50 mm measuring range and 0.01 mm graduation, the Mitutoyo 122-142 is suitable for measuring keyways, O-ring and circlip grooves, splines and narrow slots on small shafts. It is also suitable for shaft and seal inspection in oil and gas maintenance workshops.
Temperature can affect precision measurements. Steel expands by approximately 11.5 μm per metre per °C, so a 50 mm steel part exposed to a 10 °C temperature difference can change by approximately 5.8 μm. Allow the workpiece and Mitutoyo 122-142 to reach the same temperature before taking a final measurement.
For smaller groove diameters, the Mitutoyo 122-141 covers the 0–25 mm range. For general steel-part measurement, the Mitutoyo 122-112 uses a hardened steel blade.
Key Benefits
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Reaches narrow features — Blade faces measure groove floors, keyways and slots directly.
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Non-rotating spindle — Keeps the blade aligned with the slot and helps prevent twisting against the part.
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0.01 mm graduation — Provides a clear analogue reading without batteries.
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Durable blade — 0.4 mm carbide-tipped blade provides resistance to abrasion and wear.
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Consistent force — Ratchet stop helps maintain consistent measuring pressure between operators.
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Trusted brand — Mitutoyo Series 122 mechanical blade micrometer for precision inspection applications.
Ready to order the Mitutoyo 122-142? Call or WhatsApp +965 9807 4888 for a fast quote.
Who This Product Is Best For
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Machinists measuring keyways and narrow slots.
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Pump, motor and gearbox rebuild shops checking seal and circlip grooves.
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QC inspectors verifying groove diameters against engineering drawings.
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Maintenance teams looking for a battery-free precision measuring tool.
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Buyers who need blade-shaped measuring faces rather than a conventional flat-anvil outside micrometer.
How to Use
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Clean the blade faces and check zero using a setting standard of known size.
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Align the blades with the groove or keyway so they sit squarely against the feature.
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Close the spindle gently using the ratchet stop until it clicks.
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Read the sleeve and thimble graduations.
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For critical measurements, allow both the part and micrometer to reach the same temperature before taking the final reading.
Frequently Asked Questions
What range does the Mitutoyo 122-142 blade micrometer measure?
It measures from 25–50 mm with 0.01 mm graduation.
What is a blade micrometer used for?
It is used for measuring groove diameters, keyways, splines and narrow slots where a conventional flat-faced micrometer cannot reach the feature.
Why is the spindle non-rotating?
The non-rotating spindle keeps the blade parallel to the slot while closing, helping prevent the blade from twisting out of the groove or scoring the part.
Hardened steel or carbide-tipped blade: which do I need?
The hardened steel blade is suitable for general measurement work. The carbide-tipped blade on the Mitutoyo 122-142 provides greater resistance to abrasion and wear when working with hard or abrasive materials.
Which blade micrometer should I choose if my groove is outside 25–50 mm?
Choose a measuring range that brackets the groove diameter. The Mitutoyo 122-141 covers 0–25 mm. The 0.4 mm blade is also suited to narrower grooves than thicker 0.75 mm blade designs.
Can the Mitutoyo 122-142 be recalibrated?
Yes. It can be periodically recalibrated through an ISO/IEC 17025-accredited calibration service to maintain measurement traceability.
How do I order the Mitutoyo 122-142 blade micrometer in Kuwait?
Pricing is quote-based. Call or WhatsApp +965 9807 4888 to confirm price and availability.
For pricing, availability or to place an order, call or WhatsApp +965 9807 4888.
