Description
Product Overview
This NSK 0-25mm Digit Depth Micrometer is a specialized precision tool designed specifically for measuring the depth of blind holes, slots, keyways, and step heights.
- Mechanical Digit Counter: Just like the previous Mitutoyo inside micrometer, this tool features a built-in mechanical counter. It provides a direct numeric readout of the depth, completely eliminating the mental math and reading errors associated with traditional vernier scales. Because it is fully mechanical, it never requires a battery.
- Flat Reference Base: The hardened and lapped base is designed to span across a hole or slot, providing a perfectly flat and stable reference plane while the measuring rod is advanced downward.
- Reverse Reading: Unlike outside micrometers, depth micrometer thimbles read in reverse (the rod extends as the thimble turns clockwise). The digit counter simplifies this counter-intuitive process by showing you the exact depth extended.
Condition
Used (Tool Only / No Accessories).
This depth micrometer is in used condition and is fully functional.
- Important Note on Inclusions: This listing is for the bare tool only. It does not come with a storage case, adjustment spanners, or any extra interchangeable rods. It is currently equipped with the standard 0-25mm rod, meaning its measurement capability is strictly limited to that range out of the box.
Brand Information
NSK (Japan) is a legendary name in precision engineering. While they are most famous today for their world-class industrial bearings, their vintage measuring tools are highly prized by machinists. They offer the same top-tier Japanese build quality and smooth mechanical action as vintage Mitutoyo or Starrett tools.
Specifications
| Feature | Specification |
| Brand | NSK (Japan) |
| Type | Depth Micrometer |
| Readout | Mechanical Digit Counter + Thimble |
| Current Range | 0mm – 25mm |
| Graduation | 0.01mm |
| Thimble Type | Ratchet Stop |
| Included | Micrometer & 0-25mm Rod ONLY (No case) |
Keywords
NSK depth micrometer, mechanical digit micrometer, 0-25mm depth mic, digit depth gauge, blind hole micrometer, machinist depth gauge, no battery micrometer, Japanese metrology.



