Mitutoyo 122-108 Blade Micrometer, Hardened Steel Blade 175-200mm, 0.75mm, Blade

Part Number: Mitutoyo 122-108

The Mitutoyo 122-108 blade micrometer features blade-shaped anvil and spindle faces designed to reach grooves, keyways and narrow slots that standard flat-faced micrometers cannot access. It measures 175–200 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 reading to land on the shoulder instead of the feature itself. The Mitutoyo 122-108 solves this with blade-shaped anvil and spindle faces that reach the bottom of the groove.

The non-rotating spindle keeps the blade parallel to the slot as it closes, helping prevent twisting or scoring of the measured part. Its 0.75 mm hardened steel blade provides durability for regular workshop use.

With a 175–200 mm measuring range and 0.01 mm graduation, the micrometer is suitable for measuring groove diameters on large motor shafts, compressor and turbine rotors, and heavy drive shafts. It is also useful in machine shops for shaft and seal inspection.

For accurate results, allow the Mitutoyo 122-108 and the measured part to reach the same temperature before taking the measurement. Steel expands approximately 11.5 μm per metre per °C, so at 200 mm, a 10 °C temperature difference can shift the measurement by approximately 23.0 μm.

For a larger groove diameter, the Mitutoyo 122-109 covers the 200–225 mm range.

Key Benefits

• Non-rotating spindle — keeps the blade aligned with the slot during measurement

• 0.01 mm graduation — clear analogue reading without batteries

• Durable blade — 0.75 mm hardened steel for long service life

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

• Trusted Mitutoyo design — Series 122 mechanical blade micrometer

• Reaches narrow features — blade faces can measure groove floors, keyways and narrow slots directly

Ready to order the Mitutoyo 122-108? Call or WhatsApp +965 9807 4888 for a fast quote.

Who This Product Is Best For

• Machinists measuring groove diameters on large motor shafts

• 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 instead of a conventional flat-anvil outside micrometer

How to Use

1. Clean the blade faces and check zero using a suitable setting standard of known size.

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

3. Close the micrometer gently using the ratchet stop until the appropriate engagement is reached.

4. Read the sleeve and thimble graduations and record the measurement.

Frequently Asked Questions

What range does the Mitutoyo 122-108 blade micrometer measure?

It measures 175–200 mm with 0.01 mm graduation.

What is a blade micrometer used for?

It is designed for measuring groove diameters, keyways, splines and narrow slots where a conventional flat-faced micrometer cannot directly reach the feature.

Why is the spindle non-rotating?

The non-rotating spindle helps keep the blade parallel to the slot while closing, reducing the possibility of twisting the blade or contacting the part improperly.

Hardened steel or carbide-tipped blade: which do I need?

Hardened steel is suitable for general measurement work. Carbide-tipped blades can provide greater resistance to abrasion for applications involving hard or abrasive materials and frequent inspection.

Which blade micrometer should I choose if my groove is outside 175–200 mm?

Choose a measuring range that brackets the groove diameter. The Mitutoyo 122-107 covers 150–175 mm, while the Mitutoyo 122-109 covers 200–225 mm. Thinner 0.4 mm blades are available for applications requiring narrower contact blades.

Can the Mitutoyo 122-108 be recalibrated?

Yes. It can be periodically recalibrated through an ISO/IEC 17025-accredited calibration service when traceable measurement results are required.

How do I order the Mitutoyo 122-108 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.