6-Pc Dial Indicator Extension Rod Set | M2.5 Thread 25–152mm
6-Pc Dial Indicator Extension Rod Set | M2.5 Thread 25–152mm
6-Piece Dial Indicator Extension Rod Kit – M2.5 Thread, 25mm to 152mm
Expand the measurement reach of your dial indicator with this complete 6-piece extension rod assembly kit. Engineered with standardized M2.5 threads for a precise, secure fit, these metal extension rods are compatible with most dial indicators and depth gauges — making them an essential addition to any machinist's, metrologist's, or quality control technician's toolkit. Made in Mainland China.
Key Features
- Universal M2.5 Thread Compatibility: Standardized threading ensures a seamless, wobble-free connection with the vast majority of dial indicators and depth measurement tools.
- Six Versatile Lengths: The kit includes rods in six sizes — 25mm, 50mm, 76mm, 100mm, 127mm, and 152mm — so you can reach into bores, cavities, and recesses of all depths.
- Easy Assembly, Secure Fit: Rods thread together quickly and stay locked in position during measurement, ensuring readings remain stable and repeatable.
- Optimized Measurement Range: The design excludes threaded section length from the measurement calculation, so your readings reflect true depth without manual offset adjustments.
- Durable Metal Construction: Crafted from sturdy metal for long-lasting dimensional accuracy and resistance to workshop wear.
- Complete Kit: Everything you need in one package — six rods ready to use straight out of the box.
Specifications
| Product Name | 6-Piece Indicator Extension Rod Set |
| Material | Metal (Silver finish) |
| Thread Type | M2.5 |
| Rod Lengths | 25mm, 50mm, 76mm, 100mm, 127mm, 152mm |
| Color | Silver |
| Country of Origin | Made in Mainland China |
| Battery Required | No |
Package Contents
- 6 × Indicator Extension Rods (25mm, 50mm, 76mm, 100mm, 127mm, 152mm)
Notes
- Colors shown in images may vary slightly from the actual product due to monitor brightness and lighting conditions.
- Please allow for minor measurement tolerances due to manual manufacturing processes.
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Frequently Asked Questions
Q: Are these indicator extension rods compatible with all dial indicators?
A: These extension rods use standardized M2.5 threads, making them compatible with the vast majority of dial indicators and depth gauges that feature M2.5 threaded contact points. We recommend confirming your indicator's thread specification before ordering to ensure a perfect fit.
Q: Can I combine multiple extension rods to reach greater depths?
A: Yes. The rods are designed to thread together, allowing you to combine lengths for extended reach. The set includes six lengths (25mm, 50mm, 76mm, 100mm, 127mm, and 152mm), giving you a wide range of measurement depth options whether used individually or stacked.
Q: Do the extension rods affect measurement accuracy?
A: The rods are designed so the threaded connection length is excluded from the measurement calculation, ensuring your dial indicator readings reflect true depth without requiring manual offset corrections. Their rigid metal construction also minimizes flex during measurement for reliable, repeatable results.