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Chrome dial bore gauge kit with two measuring heads, extension holder and fitted case

WUQ

WUQ Extender Dial Bore Gage Kit 1.4-6" Range

SKU CH-9XRW-50SPR

Measures 1.4-6" bore diameters with 0.0005" graduations, 9.5" depth, self-centering heads, carbide tips, and extension holder in a fitted case

  • TypeTool and Appliance Tester
  • Accurate readings with 0.0005" graduations and 9.5" depth
  • Extended 1.4-6" range detects ovality and taper
  • Carbide-tipped anvils resist wear for lasting precision
  • Self-centering heads speed up bore measurement
  • Insulated grip and chrome handle improve control

Precision bore gauge kit for 1.4–6" holes

The WUQ dial bore gauge kit covers an internal diameter range of 1.4 to 6 inches and is aimed at machinists, engine builders and quality technicians who need to verify hole size, ovality and taper in cylinders, bearing bores and machined housings. It ships new in a fitted case with two self-centering measuring heads, an extension holder and spacers for quick setup.

Dial resolution of 0.0005" decides fit

The single specification that determines whether this gauge meets a tolerance requirement is its dial graduation of 0.0005 inch, paired with a two-point carbide-tipped contact system that directly reveals geometry errors such as out-of-round and taper conditions at depths up to 9.5 inches.

Carbide contacts hold accuracy during repeated use

Under sustained measurement cycles the carbide-tipped anvils resist wear and maintain consistent contact pressure, while the insulated grip and chrome-plated handle reduce operator fatigue and thermal transfer so the 0.0005" resolution remains repeatable across long inspection sessions.

Highlights

  • Accurate readings with 0.0005" graduations and 9.5" depth
  • Extended 1.4-6" range detects ovality and taper
  • Carbide-tipped anvils resist wear for lasting precision
  • Self-centering heads speed up bore measurement
  • Insulated grip and chrome handle improve control

Specifications

TypeTool and Appliance Tester

Questions about this item

How does the .0005" dial graduation translate when the gauge is set inside a bore?

The dial indicator reads in .0005" increments, so each division shows half a thousandth of an inch change in the bore diameter at the contact points.

What does the two-point contact system limit when checking a cylinder?

The two-point contact excels at detecting ovality and taper but does not reveal lobing or triangular form errors that a three-point head would show.

What is the longest reach this kit can measure down a hole?

The measuring depth is 9.5", and the included extension holder lets you reach that full depth when the gauge is assembled.

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