Depth Micrometer 0 25mm

depth micrometer 0 25mm is a precision measuring tool that utilizes the principle of screw pair transmission to convert rotary motion into linear motion, thereby measuring the depth of workpieces, step heights, or blind hole depths.

The core working principle of a depth micrometer is similar to that of an outside micrometer. It generates minute linear displacement through the rotation of a precision screw, enabling high-precision measurements. Its main structural components include:

Base:
This is the reference surface for measurement, equivalent to the anvil of an outside micrometer. It must be held firmly against the reference surface of the workpiece during use.

Sleeve (Fixed Sleeve/Barrel):
Engraved with the main scale (usually in millimeters).

Base: This is the reference surface for measurement, equivalent to the anvil of an outside micrometer. It must be held firmly against the reference surface of the workpiece during use.

Sleeve (Fixed Sleeve/Barrel):
Engraved with the main scale (usually in millimeters).

depth micrometer 0 25mm are widely used in fields such as mechanical manufacturing, mold making, aerospace, and the automotive industry. They are primarily used for measuring:

The depth of blind holes and stepped holes

The depth of recesses and keyways

The height of workpiece steps

Other depth dimensions that are difficult to measure with standard calipers

Measuring Range:
Common specifications include 0–25 mm, 0–100 mm, 0–150 mm, and 0–300 mm. Typically, a depth micrometer set comes with multiple measuring rods of different lengths to cover its total measuring range.

Graduation / Resolution:
The graduation value for most mechanical depth micrometers is 0.01 mm, which represents their typical reading resolution.

Maintenance and Care

To maintain accuracy and extend the service life, please observe the following maintenance guidelines:

Use Only for Its Intended Purpose:
Never swing the micrometer by the thimble or use it as a hammer or pry bar.

Avoid Abrasive Contact:
Do not use hard objects such as oil stones or sandpaper to clean the measuring faces or the measuring spindle.

Proper Cleaning and Lubrication of the depth micrometer 0 25mm: Strictly avoid adding alcohol, kerosene, machine oil, or Vaseline between the thimble and the sleeve. If liquid accidentally gets inside, rinse it with aviation gasoline, allow it to dry, and then apply a small amount of clock oil or special light lubricating oil.

Rust Prevention: After use, wipe it clean with a fine chamois or lint-free cloth. Apply a thin layer of anti-rust oil to exposed metal surfaces such as the measuring rod, and then store it in its dedicated case in a dry place.

Storage Environment: Do not store the instrument in damp areas or in places with acidic gases, strong magnetic fields, high temperatures, or vibrations.

Periodic Calibration: Depth micrometers are precision measuring instruments and require periodic calibration (it is recommended that the interval not exceed 6 months, or 3 months for frequent use) to ensure accuracy and reliability.

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