Description
Product Overview
When you need to accurately inspect miniature cylinders, pneumatic valve bodies, or small bearing journals for wear, taper, and out-of-roundness, standard bore gauges are far too large. The Mitutoyo 511-209 Dial Bore Gauge is engineered specifically for micro-internal inspection, covering the highly critical 6mm to 10mm size bracket.
- Half-Millimeter Increments: Sweeping small bores requires exact spring tension. This comprehensive kit includes a full set of precision interchangeable anvils that step up in precise 0.5mm increments. This ensures you always have the perfect contact geometry for any diameter between 6mm and 10mm.
- Small-Bore Precision: Engineered specifically for sub-10mm holes, the specialized measuring head provides legendary Mitutoyo self-centering accuracy, instantly aligning dead-center within the bore for a flawless, highly repeatable measurement without relying on operator “feel.”
- Carbide-Tipped Contact: The measuring contact points feature premium carbide tips, ensuring maximum wear resistance and strict accuracy even when sweeping abrasive materials or rough castings.
- Build Your Own Setup: This listing is for the bare bore gauge body and anvil kit. It is designed to accept standard dial indicators, allowing you to install your own preferred brand or resolution (such as a 0.01mm or 0.001mm dial) to suit your specific shop requirements.
Condition
Used (Good Condition / Bare Body & Anvils Only).
This high-precision internal measuring kit is in good used condition. It has been well cared for in a professional environment and is completely ready to be paired with your indicator.
- Mechanical Integrity: The bore gauge body mechanisms move freely without binding, transferring the internal movement smoothly to the top stem.
- Important Note: This kit does not include a dial indicator.
- Included Setup: It comes safely housed in its original Mitutoyo fitted protective case and includes the bore gauge body, the protective gauge shroud, and the full set of interchangeable anvils required for the 6-10mm range.
Brand Information
Mitutoyo Corporation (Japan) is the undisputed global leader in dimensional metrology. Their 511-series bore gauges are legendary in the machining and engine-building industries for their exceptional longevity and unwavering self-centering accuracy.
Specifications
| Feature | Specification |
| Brand | Mitutoyo (Japan) |
| Bore Gauge Model | 511-209 |
| Measuring Range | 6mm – 10mm |
| Anvil Increments | 0.5mm Steps |
| Contact Points | Carbide-Tipped |
| Included | Bore Gauge Body, Anvil Set, Shroud, Case |
| Not Included | Dial Indicator |
Keywords
Mitutoyo 511-209, 6-10mm bore gauge, small bore gauge, Mitutoyo dial bore gauge body, small cylinder gauge, internal measuring tools, bare bore gauge, Japanese metrology, micro bore gauge.





