Mitutoyo 103-140-10 : Outside Micrometer Range 75-100mm

The Mitutoyo 103-140-10 is a precision outside micrometer covering the 75–100 mm measurement range with 0.01 mm graduation, manufactured by Mitutoyo — the world's leading maker of dimensional measuring instruments. The largest model in the standard 103 series set, this micrometer handles the bigger shafts, housings, flanges, and machined components commonly found in heavy CNC turning, oil & gas fabrication, and industrial maintenance work across the UAE.

Built to ISO 3611 and DIN 863 standards, the 103-140-10 delivers ±3 µm accuracy with carbide-tipped, micro-lapped measuring faces for reliable full-face contact and long-term wear resistance. It ships with a 75 mm setting standard for zero-point calibration, a spanner key, and an inspection certificate — everything needed to start measuring immediately.

✦ Key Features

Carbide-Tipped Measuring Faces — Micro-lapped to 0.6 µm flatness. Built to withstand repeated contact with hardened steel, stainless steel, and cast iron workpieces in the 75–100 mm range.

75 mm Setting Standard Included — Enables precise zero-point calibration before every measurement session, maintaining traceable accuracy across shifts and operators.

Ratchet Thimble — Applies consistent 5–10 N measuring force on every reading, eliminating operator-dependent variation even on larger workpieces.

Spindle Lock — Clamp the spindle at any position for comparative measurements, gauge setting, or holding a reading during documentation.

Satin Chrome Finish — Anti-glare barrel and thimble for easy reading under shop-floor lighting conditions.

Heat-Insulating Plates — Critical on larger-frame micrometers where extended hand contact can introduce measurable thermal expansion errors.

📐 Technical Specifications

🏭 Applications

Heavy CNC Turning & Milling — Verify large shaft diameters, flange ODs, and coupling dimensions in the 75–100 mm range between machining operations.

Oil & Gas Fabrication — Inspect valve bodies, pipe fittings, and flange faces to API and ASME dimensional standards.

Quality Control & Incoming Inspection — Check received castings, forgings, and large machined components against drawing tolerances.

Maintenance and MRO — Measure bearing housings, pump casings, motor journals, and gearbox shafts during scheduled overhaul.

Shipbuilding & Heavy Engineering — Dimensional verification of structural components, pins, and bushings in the 75–100 mm range.

Why Buy from San Tools?

✅ Authorised Mitutoyo Distributor — Genuine product with full manufacturer warranty.

✅ In Stock in Dubai — Ships same-day from our Al Quoz warehouse.

✅ Calibration Certificates — Traceable certificates for ISO 9001 and IATF 16949 audits.

✅ Free UAE Delivery — On orders over AED 500.

✅ Expert Support — 38 years matching the right instrument to the right application.

Frequently Asked Questions

Is this a genuine Mitutoyo product?
Yes. San Tools is an authorised Mitutoyo distributor in the UAE. Every micrometer ships with Mitutoyo packaging and an inspection certificate.

Does the 103-140-10 come with a setting standard?
Yes. A 75 mm setting standard is included in the box for zero-point calibration. All Mitutoyo micrometers from 25 mm upward ship with a setting standard.

Why is the accuracy ±3 µm instead of ±2 µm?
Larger-range micrometers have slightly wider accuracy tolerances per ISO 3611 — this is standard across all manufacturers. The 103-140-10 still delivers the tightest accuracy specification in its class.

Can I get a calibration certificate?
Yes. We provide traceable calibration certificates on request — essential for ISO 9001, IATF 16949, and AS 9100 quality systems.

Can I buy the full 0–100 mm set?
Yes. Contact us for set pricing on the 103-137, 103-138, 103-139-10, and 103-140-10 — we offer bundle discounts for complete micrometer sets.