Mitutoyo 129-111 Depth Micrometer, Interchangeable Rods 0-100mm, 63mm Base

Part No. 129-111 | Mitutoyo Series 129

Product Description

The Mitutoyo 129-111 depth micrometer provides accurate metric depth measurement from 0 to 100 mm using four interchangeable measuring rods. Its 63.5 × 16 mm hardened, ground and micro-lapped base provides a compact reference surface for measuring features where a wider base may overhang the available area.

The four interchangeable ø4 mm rods extend the measuring range in 25 mm increments, allowing one instrument to cover depths throughout the 0–100 mm range. Each rod has a lapped measuring face, while the measuring-rod clamp secures the selected rod during use.

A ratchet stop helps maintain consistent measuring force for repeatable readings. With 0.01 mm graduation and ±3 µm micrometer head accuracy, the 129-111 is suited to dimensional inspection of machined components.

Typical applications include counterbore depths, slot and keyway depths, step heights, shoulder distances, holes and recessed features. The compact base is particularly useful for narrower shoulders, smaller openings and recessed areas where a wider depth-micrometer base could interfere with the surrounding surface.

For a larger 0–150 mm measuring range with the same compact 63.5 × 16 mm base, see the Mitutoyo 129-112. For measurements up to 75 mm, see the Mitutoyo 129-110.

Key Benefits

Full 0–100 mm measuring range: four interchangeable rods cover the range in 25 mm increments.

Precise metric readings: 0.01 mm graduation with ±3 µm micrometer head accuracy.

Compact reference base: the 63.5 × 16 mm hardened, ground and micro-lapped base suits narrower shoulders and smaller openings.

Repeatable measuring force: the ratchet stop helps maintain consistent contact pressure.

Secure rod positioning: the measuring-rod clamp holds the selected measuring rod firmly.

Flexible depth measurement: interchangeable rods allow multiple depth ranges to be measured with one instrument.

Need a price or delivery time for the 129-111? Call +965 9807 4888 for a fast quote.

Who This Product Is Best For

The Mitutoyo 129-111 is suited to machine shops, mould and die makers, quality inspectors and maintenance teams that require reliable metric depth measurement up to 100 mm.

It is useful for checking first-off parts, verifying machined features between operations, measuring counterbores and recessed areas, and inspecting slot, keyway, step and shoulder dimensions.

The compact 63.5 × 16 mm base makes the 129-111 particularly useful where measurement access is restricted or a larger reference base could overhang the component.

How to Use

1. Select the interchangeable rod appropriate for the required depth and secure it using the measuring-rod clamp.

2. Check the instrument against a suitable reference surface or standard before critical measurements.

3. Place the base flat and square across the opening or reference surface.

4. Turn the micrometer thimble until the measuring rod contacts the bottom of the feature.

5. Finish the measurement using the ratchet stop to help apply consistent measuring force.

6. Read the sleeve and thimble and account for the selected rod length to determine the total depth.

Frequently Asked Questions

What is the Mitutoyo 129-111 used for?

The 129-111 measures the depth of holes, slots, steps, recesses, counterbores and similar features from 0 to 100 mm using four interchangeable rods and a 63.5 × 16 mm base.

How accurate is the Mitutoyo 129-111?

The micrometer head has an accuracy of ±3 µm. The interchangeable rod accuracy is specified as ±(2 + L/75) µm, where L is the maximum measuring length in millimetres.

How do the interchangeable rods work?

The 129-111 uses four ø4 mm interchangeable rods in 25 mm increments. Select the rod appropriate for the required depth, secure it with the clamp, and use the micrometer head for the final measurement.

What is the difference between the 129-111 and 129-112?

Both models use a 63.5 × 16 mm base and four or more interchangeable rods in 25 mm increments. The 129-111 covers 0–100 mm with four rods, while the 129-112 extends the range to 0–150 mm with six rods.

What is the difference between the 129-111 and 129-110?

The 129-111 covers 0–100 mm using four interchangeable rods, while the 129-110 covers 0–75 mm. The 129-110 is intended for applications where the required depth does not exceed 75 mm.

What type of base does the 129-111 have?

The 129-111 has a 63.5 × 16 mm hardened, ground and micro-lapped base. Its compact dimensions make it useful around narrower shoulders, smaller openings and recessed features.

How do I buy the Mitutoyo 129-111 in Kuwait?

Call Al Belad General Tech Services on +965 9807 4888 or email mathews@generaltechkuwait.com for pricing and delivery information.