Original price was: $ 250.47.$ 215.51Current price is: $ 215.51.
Buy the Mitutoyo 103-143-10 Outside Micrometer Economy Design – a cost-effective, analog micrometer with ratchet stop, 150–175 mm measuring range, and ±4 µm accuracy for reliable precision.
The Mitutoyo 103-143-10 Outside Micrometer Economy Design is a cost-effective, analog micrometer built for dependable precision in everyday industrial and workshop use. With a measurement range of 150–175 mm, a fine graduation of 0.01 mm, and a ±4 µm accuracy, it ensures reliable readings for demanding applications. Designed with a ratchet stop for repeatable results and carbide-tipped measuring faces for durability, this micrometer combines quality craftsmanship with affordability, making it an essential tool for machinists, technicians, and inspectors.
The Mitutoyo 103-143-10 Outside Micrometer features a non-digital analog scale with satin chrome finish on thimble and sleeve, ensuring clear readings under workshop lighting. Its spindle lock and ratchet stop provide consistency and repeatability across multiple measurements. Built with a 0.6 µm flatness and 3 µm parallelism tolerance, the carbide-tipped measuring faces ensure long-term wear resistance and precision. Weighing 720 g and ergonomically designed for operator comfort, this micrometer is ideal for measuring external dimensions with dependable accuracy.
The Mitutoyo 103-143-10 is the perfect balance between affordability and reliability. Unlike basic economy tools, it carries the assurance of Mitutoyo’s precision engineering while remaining cost-effective for regular use. Its ratchet stop, carbide-tipped faces, and sturdy construction mean you don’t sacrifice accuracy for price. If you need a micrometer that delivers Japanese quality at an entry-level cost, this model is the smart investment.
Measuring external dimensions with accuracy often demands a tool that won’t drift, wear quickly, or produce inconsistent results. The Mitutoyo 103-143-10 solves this by offering consistent, repeatable measurements through its ratchet stop mechanism and high-grade carbide-tipped anvils. It eliminates the risk of operator error due to inconsistent pressure and provides reliable results even after prolonged use, making it the trusted solution for machining, inspection, and quality control tasks.
In a job shop running stainless and tool steel, machinists verify the final OD of 150–175 mm step‑shafts right off the lathe. The ratchet ensures uniform measuring force across hot‑to‑cool transitions, while the analog thimble gives a fast, glanceable readout during in‑process checks. Consistent technique reduces scrap, catches taper early, and documents that the part holds tolerance before it ever leaves the chuck.
Assembly teams confirm outer diameters of large bushings and bearing housings before press‑fit into aluminum frames. Stable feel from the ratchet removes operator variability, so borderline parts don’t get forced into expensive bores. The micrometer’s robust faces resist wear from repeated shop-floor use, enabling reliable acceptance decisions that protect mating components, reduce rework, and preserve the interference fit needed for long service life.
Quality inspectors sample incoming rollers/tubes to validate supplier certificates. The micrometer’s smooth action helps generate repeatable results for GR&R studies and day‑to‑day audits. Quick analog readings speed through lots without setup overhead, while consistent measuring pressure prevents over‑squeezing thin‑wall parts. The outcome is cleaner pass/fail decisions, fewer quarantines, and a traceable record that supports supplier scorecards and continuous improvement programs.
Maintenance technicians measure OD wear on conveyor rollers and guide pins during scheduled shutdowns. By recording periodic measurements at the same points, teams can trend material loss and schedule replacements before failures occur. The dependable feel and rugged contact faces stand up to oily environments, and the straightforward analog scale encourages frequent checks. This keeps lines running, reduces emergency downtime, and extends component life with data‑driven intervals.
| Feature | Details | Benefit |
|---|---|---|
| Measurement Range | 150 – 175 mm | Covers medium-sized external parts with high accuracy. |
| Graduation | 0.01 mm | Enables fine resolution readings for precise machining tolerances. |
| Maximum Permissible Error (J MPE) | ±4 µm | Ensures reliable measurements for inspection and quality control. |
| Flatness | 0.6 µm | Guarantees consistent contact for accurate readings. |
| Parallelism | 3 µm | Reduces measurement deviation between anvils for repeatability. |
| Measuring Faces | Carbide-tipped, micro-lap finish | Exceptional durability and wear resistance for long service life. |
| Spindle | With lock, Ø6.35 mm spindle (≤300 mm range), pitch 0.5 mm | Provides stable clamping and smooth measurement operation. |
| Ratchet Stop | Integrated | Delivers uniform measuring force, reducing operator error. |
| Thimble & Sleeve Finish | Satin chrome, Ø18 mm | Clear scale visibility and resistance to glare. |
| Scale Type | Analog (non-digital) | Cost-effective, robust, and dependable in any workshop. |
| Measuring Force | 5 – 10 N | Optimized for stable readings without deforming parts. |
| Mass | 720 g | Solid and stable handling during repeated measurements. |
| Standard Accessories | Box, key, setting standard | Complete setup for calibration and immediate use. |
| Optional Accessories | Micrometer Stand (Art. 156-102), Setting Standard (Art. 167-106) | Expand measurement versatility and ensure calibration accuracy. |
| Build Quality | Mitutoyo precision engineering, economy design | Balances affordability with trusted Japanese quality. |
| Use Environment | Workshop, QC lab, assembly line | Adaptable to varied industrial measurement needs. |
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Outside Micrometer Economy Design |
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Outside Micrometer Economy Design |
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Outside Micrometer Economy Design |
| 150-175mm |
175-200mm |
200-225mm | |||
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Mitutoyo Part Number: 103-143-10 |
Mitutoyo Part Number: 103-144-10 |
Mitutoyo Part Number: 103-145-10 | |||
| More Info | More Info | ||||
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Outside Micrometer Economy Design |  |
Outside Micrometer Economy Design |
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Outside Micrometer Economy Design |
| 25-50mm | 0-25mm, 0,001mm | 50-75mm | |||
| Mitutoyo Part Number: 103-138 | Mitutoyo Part Number: 103-129 | Mitutoyo Part Number: 103-139-10 | |||
| More Info | More Info | More Info | |||
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Outside Micrometer Economy Design |  |
Outside Micrometer Economy Design |  |
Outside Micrometer Economy Design |
| 25-50mm, 0,001mm | 325-350mm | 675-700mm | |||
| Mitutoyo Part Number: 103-130 | Mitutoyo Part Number: 103-150 | Mitutoyo Part Number: 103-164 | |||
| More Info | For more : Contact us | For more : Contact us | |||
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Outside Micrometer Economy Design |  |
Outside Micrometer Economy Design |  |
Outside Micrometer Economy Design |
| 0-25mm | 350-375mm | 700-725mm | |||
| Mitutoyo Part Number: 103-137 | Mitutoyo Part Number: 103-151 | Mitutoyo Part Number: 103-165 | |||
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Outside Micrometer Economy Design |  |
Outside Micrometer Economy Design |  |
Outside Micrometer Economy Design |
| 400-425mm | 375-400mm | 725-750mm | |||
| Mitutoyo Part Number: 103-153 | Mitutoyo Part Number: 103-152 | Mitutoyo Part Number: 103-166 | |||
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Outside Micrometer Economy Design |  |
Outside Micrometer Economy Design |  |
Outside Micrometer Economy Design |
| 75-100mm | 425-450mm | 750-775mm | |||
| Mitutoyo Part Number: 103-140-10 | Mitutoyo Part Number: 103-154 | Mitutoyo Part Number: 103-167 | |||
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Outside Micrometer Economy Design |  |
Outside Micrometer Economy Design |  |
Outside Micrometer Economy Design |
| 100-125mm | 450-475mm | 775-800mm | |||
| Mitutoyo Part Number: 103-141-10 | Mitutoyo Part Number: 103-155 | Mitutoyo Part Number: 103-168 | |||
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Outside Micrometer Economy Design |  |
Outside Micrometer Economy Design |  |
Outside Micrometer Economy Design |
| 125-150mm | 475-500mm | 800-825mm | |||
| Mitutoyo Part Number: 103-142-10 | Mitutoyo Part Number: 103-156 | Mitutoyo Part Number: 103-169 | |||
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Outside Micrometer Economy Design |  |
Outside Micrometer Economy Design |  |
Outside Micrometer Economy Design |
| 150-175mm | 500-525mm | 825-850mm | |||
| Mitutoyo Part Number: 103-143-10 | Mitutoyo Part Number: 103-157 | Mitutoyo Part Number: 103-170 | |||
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Outside Micrometer Economy Design |  |
Outside Micrometer Economy Design |  |
Outside Micrometer Economy Design |
| 175-200mm | 525-550mm | 850-875mm | |||
| Mitutoyo Part Number: 103-144-10 | Mitutoyo Part Number: 103-158 | Mitutoyo Part Number: 103-171 | |||
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Outside Micrometer Economy Design |  |
Outside Micrometer Economy Design |  |
Outside Micrometer Economy Design |
| 200-225mm | 550-575mm | 875-900mm | |||
| Mitutoyo Part Number: 103-145-10 | Mitutoyo Part Number: 103-159 | Mitutoyo Part Number: 103-172 | |||
| For more : Contact us | For more : Contact us | For more : Contact us | |||
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Outside Micrometer Economy Design |  |
Outside Micrometer Economy Design |  |
Outside Micrometer Economy Design |
| 225-250mm | 575-600mm | 900-925mm | |||
| Mitutoyo Part Number: 103-146-10 | Mitutoyo Part Number: 103-160 | Mitutoyo Part Number: 103-173 | |||
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Outside Micrometer Economy Design |  |
Outside Micrometer Economy Design |  |
Outside Micrometer Economy Design |
| 250-275mm | 600-625mm | 925-950mm | |||
| Mitutoyo Part Number: 103-147-10 | Mitutoyo Part Number: 103-161 | Mitutoyo Part Number: 103-174 | |||
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Outside Micrometer Economy Design |  |
Outside Micrometer Economy Design |  |
Outside Micrometer Economy Design |
| 275-300mm | 625-650mm | 950-975mm | |||
| Mitutoyo Part Number: 103-148-10 | Mitutoyo Part Number: 103-162 | Mitutoyo Part Number: 103-175 | |||
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Outside Micrometer Economy Design |  |
Outside Micrometer Economy Design |  |
Outside Micrometer Economy Design |
| 300-325mm | 650-675mm | 975-1000mm | |||
| Mitutoyo Part Number: 103-149 | Mitutoyo Part Number: 103-163 | Mitutoyo Part Number: 103-176 | |||
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Optional accessories:
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Micrometer Stand |
| for Micrometer 100-300mm/5-12″ | |
| Mitutoyo Part Number: 156-102 | |
| For more : Contact us | |
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Micrometer Setting Standard |
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Length: 150mm |
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| Mitutoyo Part Number: 167-106 | |
| For more : Contact us |
For expert guidance before placing your order.
Warranty – 1-year warranty for your peace of mind.
Global Shipping – We ship worldwide with secure packaging and reliable delivery.
Technical Support – Contact us for professional after-sales technical assistance.
