Description
Pre-Order Arriving Late May/early June
Product Overview
When you’re measuring turned shafts, bored housings, or ground components that fall well outside the range of a standard 0–25mm or even 75–100mm mic, you need a set that can actually reach — and still hold calibration across the full span. The jump from 150mm to 300mm covers the kind of workpiece diameters that come off a big lathe or a horizontal borer, where a standard micrometer set runs out of legs and you’re left scribing dimensions off a vernier or reaching for a less-than-ideal alternative. This Mitutoyo 150–300mm Outside Micrometer Set solves that problem directly, giving you four full-range steps in a single matched set, with interchangeable anvils and setting rods so each range is properly referenced before you take a reading. It’s a genuine Mitutoyo — Japanese-manufactured, 0.01mm graduated — presented in used but functionally sound condition with the original wooden box, all setting rods, and all changeable anvils present and accounted for.
- 0.01mm graduation across 150–300mm range — At these diameters a thou is already a meaningful tolerance, and 0.01mm resolution keeps you honest on fit checks, bearing journals, and spigot diameters where a sloppy reading costs you a part.
- Interchangeable anvil system — Rather than four separate heavy frames on the bench, one frame covers 50mm steps by swapping anvil extensions. Less mass to handle, less bench space consumed, and all anvils are ground to the same datum so there’s no step-change in accuracy between ranges.
- Setting rods included for every range — At 150mm and above you cannot zero a micrometer closed; a calibrated setting rod for each 50mm increment is the only correct way to establish your datum. Having all rods in the set means you’re not improvising with a gauge block stack or guessing.
- Mitutoyo Series build quality — Hardened and ground anvil and spindle faces, carbide-tipped on the contact surfaces, and a thimble mechanism that’s known for consistent feel and repeatable lock-down. These are the features that matter when you’re checking a 250mm shaft diameter six times across a shift and need the same answer each time.
- Ideal for: Measuring turned shafts and ground bores in the 150–300mm class, checking lathe chuck backplate fits, verifying ring gear ODs, bearing housing diameters on large spindles, and press-fit component inspection in general engineering and toolroom environments.
Condition
Used (Good Condition / Complete Set, Functional)
The micrometer frame shows the honest patina of a tool that has seen shop-floor use — there is light surface wear and handling marks consistent with regular workshop service, visible on the frame and barrel as minor scuffing and age-related discolouration. The critical precision surfaces — spindle face, anvil faces, and thimble barrel — appear clean and free from pitting, gouging, or damage that would compromise measurement accuracy. The thimble action is smooth with no detectable slop or binding across the adjustment range. The setting rods show age-related oxidation on their non-contact surfaces (consistent with storage), but the ground reference ends appear serviceable. As with any used micrometer in this size class, verification against a known ring gauge or master standard at each 50mm step is strongly recommended before committing to production measurement — this is standard practice regardless of the tool’s history. The original wooden storage box is present and intact with its hinges functional, providing proper support and protection for the frame and accessories between uses.
Included:
- 1 x Mitutoyo Outside Micrometer Set, 150–300mm, 0.01mm graduation
- Interchangeable anvil extensions (full set for all ranges)
- Setting rods for all 50mm increments (150mm, 200mm, 250mm, 300mm)
- Original wooden storage box
Not included: Calibration certificate. No spanner wrench or additional accessories beyond those listed above were confirmed present. Buyers requiring NATA-traceable calibration should factor in a recalibration service prior to formal inspection use.
Brand Information
Mitutoyo Corporation is a Japanese precision instrument manufacturer founded in 1934 and is widely regarded as the global benchmark in dimensional metrology — the name sits at the top of the toolroom hierarchy alongside Mahr, Starrett, and Tesa, and is the reference brand against which most other precision measuring tools are judged in Australian trade and manufacturing. Their micrometers are manufactured to exacting Japanese Industrial Standards, with hardened and ground measuring faces and spindle mechanisms engineered for long-term repeatability under daily workshop conditions. Buying a used Mitutoyo at this size range is a well-understood value proposition in Australian workshops: the underlying accuracy and build quality outlasts the cosmetics by decades, and replacement parts and calibration services are readily available through Australian Mitutoyo distributors.
Specifications
| Feature | Specification |
|---|---|
| Brand | Mitutoyo |
| Type | Outside Micrometer Set — Interchangeable Anvil |
| Measuring Range | 150–300mm (in 50mm steps: 150–200, 200–250, 250–300mm) |
| Graduation / Resolution | 0.01mm |
| Anvil Type | Interchangeable / Changeable Anvil Extensions |
| Contact Face Material | Carbide-tipped (hardened and ground) |
| Setting Standards | Setting rods included for all 50mm increments |
| Frame Construction | Cast iron frame with baked enamel finish, heat-insulated thimble |
| Country of Origin | Japan |
| Condition | Used — Good Condition |
| Included Items | Full anvil set, all setting rods, original wooden box |
| Not Included | Calibration certificate |
Keywords
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