Description
Product Overview
When your work scope pushes past the 150mm mark and you need a measurement you can actually trust, the Mitutoyo 104-141A outside micrometer steps up to the task. Spanning the 200–300mm range with a 0.01mm graduation, this is a toolroom-grade instrument built for the serious end of the trade — shaft diameters, large bored housings, heavy fabrication components, and anything else that demands genuine Japanese precision at the large-end of the outside mic range.
- 200–300mm measuring range with 0.01mm graduation — The 100mm span is handled through interchangeable anvil extensions (included), letting you cover the full range without swapping instruments. At 0.01mm (roughly half a thou) graduation, you’re working at a resolution that’s meaningful for bearing fits, shaft tolerances, and close-tolerance turned components — not just rough sizing.
- Mitutoyo-ground measuring faces and precision-lapped spindle — The anvil and spindle faces are ground and lapped flat to Mitutoyo’s own tolerance standards. This is the surface that contacts your part, and on a large micrometer where frame flex is a real concern, having confidence in those reference surfaces matters. The spindle thread is precision-ground for consistent feel throughout the range with no slop or tightness at any point.
- Lightweight frame with large heat-insulating contact areas — At this size, thermal expansion from hand contact becomes a genuine measurement error source. Mitutoyo’s large-frame design incorporates insulating plates on the frame to reduce heat transfer from your hands to the instrument — directly protecting measurement accuracy during normal bench use.
- Interchangeable anvil system — The 104-141A uses a set of interchangeable anvil extensions to cover the 200–300mm range. These are precision ground to length and included with the instrument. Setting the correct anvil extension and verifying zero against the supplied reference standard before use is standard practice with any large micrometer of this type.
- Ideal for — Measuring large turned shaft diameters, checking large bearing journals, verifying bored housing dimensions on a lathe or machining centre, inspecting large ground components on a surface grinder setup, and quality inspection of fabricated or cast parts in a toolroom or production environment.
Condition
(New — Factory Sealed)
This instrument is factory sealed and presents as new from Mitutoyo’s production line. The measuring faces, spindle, thimble, and frame show no signs of use, contact wear, or corrosion. The spindle action is smooth and consistent across the full travel, the thimble rotates without any detectable backlash, and the locking lever operates correctly. All interchangeable anvil extensions are present, undamaged, and free of nicks on their reference faces — the surfaces that directly affect measurement accuracy. The calibration certificate is included and traceable to national standards, which means this instrument is ready to put straight into a quality system without any additional verification overhead, though zeroing against the supplied standard before first use remains best practice. No flaws, wear, or defects to disclose. This is an instrument you can put directly onto the bench with full confidence in its out-of-box accuracy.
Included
- 1 x Mitutoyo 104-141A Outside Micrometer, 200–300mm, 0.01mm graduation
- Interchangeable anvil extension set (to cover full 200–300mm range)
- Setting standard / reference gauge
- Calibration certificate (traceable)
- Original Mitutoyo wooden carry case
- Original papers / manuals
Brand Information
Mitutoyo Corporation, founded in Japan in 1934, is the world’s largest manufacturer of precision measuring instruments and is widely regarded as the global benchmark in metrology tooling. Their products are manufactured in Japan to exacting tolerances and are the reference standard against which most other brands in the industry are measured — literally and figuratively. In the Australian trade, Mitutoyo sits at the top of the toolroom hierarchy alongside Starrett and Tesa, and is the brand of choice for quality-conscious machinists, toolmakers, and metrology laboratories who won’t compromise on accuracy or long-term reliability.
Specifications
| Feature | Specification |
|---|---|
| Brand | Mitutoyo |
| Model | 104-141A |
| Type | Outside Micrometer (Large Frame, Interchangeable Anvil) |
| Series | 104 — Large Outside Micrometer Series |
| Measuring Range | 200–300mm |
| Graduation / Resolution | 0.01mm |
| Accuracy | ±0.006mm (refer to calibration certificate for verified values) |
| Anvil System | Interchangeable anvil extensions (set included) |
| Frame Construction | Cast iron frame with heat-insulating contact plates |
| Spindle | Precision-ground, hardened steel |
| Measuring Faces | Carbide-tipped, ground and lapped |
| Country of Origin | Japan |
| Condition | New (Factory Sealed) |
| Included Items | Micrometer, interchangeable anvil set, setting standard, calibration certificate, wooden case, papers/manuals |
Keywords
Mitutoyo 104-141A, Mitutoyo outside micrometer, large micrometer 200-300mm, interchangeable anvil micrometer, toolroom micrometer Australia, precision outside mic, large bore micrometer, Mitutoyo large frame mic, shaft measurement micrometer, metrology equipment Australia, outside micrometer 300mm, Japanese precision micrometer
