Mitutoyo 129-116 Depth Micrometer, Interchangeable Rods 0-150mm, 101mm Base
Part No. 129-116 | Mitutoyo Series 129
Product Description
The Mitutoyo 129-116 depth micrometer provides accurate metric depth measurement from 0 to 150 mm using six interchangeable measuring rods. Its 101.6 × 16 mm hardened, ground and micro-lapped base provides a broad, stable reference surface across openings, shoulders and recessed features.
The six interchangeable ø4 mm rods extend the measuring range in 25 mm steps, allowing one instrument to cover depths throughout the 0–150 mm range. Each rod has a lapped measuring face, and 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 129-116 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 101.6 × 16 mm base provides a broad reference surface where stable positioning is important.
For the same 0–150 mm range with a more compact 63.5 × 16 mm base, see the Mitutoyo 129-112. For measurements up to 100 mm, see the Mitutoyo 129-111.
Key Benefits
Broad 0–150 mm range: six interchangeable rods cover the measuring range in 25 mm increments.
Precise metric readings: 0.01 mm graduation with ±3 µm micrometer head accuracy.
Stable reference base: the 101.6 × 16 mm hardened, ground and micro-lapped base provides broad contact across the opening.
Repeatable measuring force: the ratchet stop helps maintain consistent contact pressure.
Secure rod positioning: the measuring-rod clamp holds the selected rod firmly.
Flexible depth measurement: interchangeable rods allow multiple depths to be measured with one instrument.
Need a price or delivery time for the 129-116? Call +965 9807 4888 for a fast quote.
Who This Product Is Best For
The Mitutoyo 129-116 is suited to machine shops, mould and die makers, quality inspectors and maintenance teams that require reliable metric depth measurement up to 150 mm.
It is useful for inspecting machined parts, checking counterbores and recessed features, verifying slot and keyway depths, and measuring step heights and shoulder distances across a broad range of component sizes.
How to Use
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Select the interchangeable rod appropriate for the required depth and secure it using the measuring-rod clamp.
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Place the base flat and square across the opening or reference surface.
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Turn the micrometer thimble until the measuring rod contacts the bottom of the feature.
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Finish the measurement using the ratchet stop to help apply consistent measuring force.
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Read the sleeve and thimble and account for the selected rod length to determine the total depth.
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For critical inspection work, verify the instrument against a suitable reference standard before measurement.
Frequently Asked Questions
What is the Mitutoyo 129-116 used for?
The 129-116 measures the depth of holes, slots, steps, recesses, counterbores and similar features from 0 to 150 mm using six interchangeable rods and a 101.6 × 16 mm base.
How accurate is the Mitutoyo 129-116?
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 129-116 uses six 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 129-116 and 129-112?
Both models cover 0–150 mm. The 129-116 has a 101.6 × 16 mm base, while the 129-112 has a more compact 63.5 × 16 mm base. The wider base provides a broader reference surface, while the compact base can be useful where access is more restricted.
What is the difference between the 129-116 and 129-111?
The 129-116 covers 0–150 mm with six interchangeable rods. The 129-111 covers 0–100 mm, making it suitable when the required measuring depth does not exceed 100 mm.
How do I buy the Mitutoyo 129-116 in Kuwait?
Call Al Belad General Tech Services on +965 9807 4888 or email mathews@generaltechkuwait.com for pricing and delivery information.
