Mitutoyo 122-125 Blade Micrometer, Hardened Steel Blade 0-1", 0.75mm Blade

Part Number: Mitutoyo 122-125

The Mitutoyo 122-125 blade micrometer features blade-shaped anvil and spindle faces with a 0.75 mm hardened steel blade designed to reach grooves, keyways and narrow slots that standard flat-faced micrometers cannot access. It measures from 0"–1" (0–25.4 mm) with 0.0001" 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 122-125 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 0.75 mm hardened steel blade is designed for durability in regular workshop use.

With a 0"–1" (0–25.4 mm) measuring range and 0.0001" graduation, the Mitutoyo 122-125 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 25.4 mm steel part exposed to a 10 °C temperature difference can change by approximately 2.9 μm. Allow the workpiece and Mitutoyo 122-125 to reach the same temperature before taking a final measurement.

For larger groove diameters, the Mitutoyo 122-126 covers the 1"–2" range.

Key Benefits

• Reaches narrow features — Blade faces measure groove floors, keyways and slots directly.

• Non-rotating spindle — Keeps the blade aligned with the slot and helps prevent twisting against the part.

• 0.0001" graduation — Provides a clear analogue reading without batteries.

• Durable blade — 0.75 mm hardened steel blade provides durability for regular workshop use.

• Consistent force — Ratchet stop helps maintain consistent measuring pressure between operators.

• Trusted brand — Mitutoyo Series 122 mechanical blade micrometer for precision inspection applications.

Ready to order the Mitutoyo 122-125? Call or WhatsApp +965 9807 4888 for a fast quote.

Who This Product Is Best For

• Machinists measuring keyways and narrow slots.

• Pump, motor and gearbox rebuild shops checking seal and circlip grooves.

• QC inspectors verifying groove diameters against engineering drawings.

• Maintenance teams looking for a battery-free precision measuring tool.

• Buyers who need blade-shaped measuring faces rather than a conventional flat-anvil outside micrometer.

How to Use

1. Clean the blade faces and check the micrometer zero.

2. Align the blades with the groove or keyway so they sit squarely against the feature.

3. Close the spindle gently using the ratchet stop until it clicks.

4. Read the sleeve and thimble graduations.

5. 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 122-125 blade micrometer measure?

It measures from 0"–1" (0–25.4 mm) with 0.0001" 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. Carbide-tipped blades can be useful where greater resistance to abrasion and wear is required.

Which blade micrometer should I choose if my groove is outside 0"–1"?

Choose a measuring range that brackets the groove diameter. The Mitutoyo 122-126 covers the 1"–2" range.

Can the Mitutoyo 122-125 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 122-125 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.