![Mitutoyo 293-821-30 [Digimatic] Digital Outside Micrometer 25mm (Ratchet Stop)](http://khmtools.com.ph/cdn/shop/files/293-821-30_z_jpg.png?v=1750512268&width=1)
![Mitutoyo 293-821-30 [Digimatic] Digital Outside Micrometer 25mm (Ratchet Stop)](http://khmtools.com.ph/cdn/shop/files/293-821-30_z_jpg.png?v=1750512268&width=600)
![Mitutoyo 293-831-30 [Digimatic] Digital Outside Micrometer 1" (Ratchet Stop)](http://khmtools.com.ph/cdn/shop/files/293-831-30_z1_jpg.png?v=1750511943&width=1)
![Mitutoyo 293-831-30 [Digimatic] Digital Outside Micrometer 1" (Ratchet Stop)](http://khmtools.com.ph/cdn/shop/files/293-831-30_z1_jpg.png?v=1750511943&width=600)
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Digital micrometers measure outside diameters and thicknesses to a very fine resolution, with the reading shown on a clear display. Machinists, quality inspectors, mechanics and engineers use them for shafts, pins, bearings, sheet and other machined parts. This collection carries Mitutoyo Digimatic micrometers, including special types for points, grooves, V-shaped parts, depths and bores.
How to choose a digital micrometer
- Range: each outside micrometer covers a 25mm (1") span, such as 0-25mm, 25-50mm or 50-75mm. Choose the range that matches your parts, or build a set.
- Coolant proof: the IP65 models, such as the Mitutoyo 293-230-30, 293-240-30 and 293-330-30 to 293-333-30, resist coolant and dust on the shop floor.
- Quantumike and Quickmike: the Mitutoyo 293-145-30 and 293-185-30 Quantumike and the 293-667-20 Quickmike are made for faster spindle travel between sizes.
- Special types: point micrometers (Series 342) measure narrow grooves, V-anvil micrometers (Series 314) check odd-fluted tools, depth micrometers (Series 329) measure steps, and Holtest (Series 468) measures bores.
Popular digital micrometers at KHM Megatools
| Model | Type | Range |
|---|---|---|
| Mitutoyo 293-821-30 / 293-831-30 | Digimatic, ratchet stop | 0-25mm / 0-1" |
| Mitutoyo 293-230-30 / 293-231-30 | IP65 coolant proof | 0-25mm / 25-50mm |
| Mitutoyo 293-330-30 to 293-333-30 | IP65 coolant proof | 0-1" to 3-4" |
| Mitutoyo 293-145-30 / 293-141-30 | Quantumike | 0-25mm / 25-50mm |
| Mitutoyo 293-667-20 | Quickmike | 25-55mm |
| Mitutoyo Series 342 / 314 | Point / V-anvil | Grooves and fluted tools |
| Mitutoyo Series 329 / 468 | Depth / Holtest internal | Steps and bores |
Micrometer or caliper?
A digital caliper measures many sizes quickly and is good for general checks. A micrometer covers a smaller range but gives finer, more repeatable readings for tight tolerances. See more micrometers, and for runout and alignment use a dial indicator.
All products from KHM Megatools are genuine and covered by the manufacturer's warranty where applicable.
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