Co-Ax Indicator 0-0.15in by.0005in Graduations - Precision Dial

Our review of the Co-Ax Indicator looks at who will get the most value from this precision dial indicator and the single biggest reason to buy it: accurate, repeatable feeler options for a range of alignment and dimensional tasks. The set is clearly aimed at machinists and inspection technicians who need a compact indicator with fine.0005in graduations and an overall accuracy of 0.0002in. The various straight and curved feelers plus a center point make it versatile for axial, radial and off-center measurements, and the dial remains easy to read and operate during routine workshop use.

Key Features

• Comprehensive set: Includes multiple points and feelers so the indicator adapts to different measurement geometries without extra purchases.
• Fine graduations:.0005in graduations provide tight incremental resolution for precise adjustments and verification.
• High accuracy: Stated accuracy of 0.0002in gives confidence when checking critical alignments or runout.
• Varied feeler lengths: Straight feelers at 1.77in, 4in and 6.06in let the user reach into deep or awkward locations while maintaining control.
• Curved and center options: Curved feelers (1.81in, 4in, 6.06in) and a 2.07in center point make axial and radial checks straightforward.

Who It's For

The indicator is best for shop machinists, toolmakers and inspection techs who perform alignment, tailstock setup and dimensional checks where small increments matter. The combination of fine graduations and multiple feelers suits users who switch between spindle, idler and center measurements.

Hobbyists who rarely need sub-thousandth precision may find the set more capability than required, and those needing wireless or digital readout will need to look elsewhere since this set is a mechanical coaxial indicator focused on tactile use and dial readability.

Pros & Cons

Pros

• Multiple feeler styles and lengths provide strong versatility for varied measurement tasks.
• .0005in graduations and 0.0002in accuracy deliver reliable precision for alignment work.
• Dial operation is smooth and easy to read, which customers noted improves workflow.

Cons

• Lacks a digital readout or data output, so logging measurements requires manual recording.
• The alignment performance received mixed feedback, so extreme setups may need verification with a secondary method.

Specifications

Measuring Range	0-0.15in
Graduation	.0005in
Accuracy	0.0002in
Straight feeler lengths	1.77in, 4in, 6.06in
Curved feeler lengths	1.81in, 4in, 6.06in
Center point feeler	2.07in

Our Verdict

The Co-Ax Indicator set is a solid choice for professionals who need a compact mechanical indicator with excellent resolution and a mix of feeler options. It offers clear value for precision shop work because of its accuracy and useful variety of probes, though users who require digital output or only occasional measurements may prefer a simpler or digital instrument.

Frequently Asked Questions

Can this indicator check radial runout?
Yes. The set includes curved feelers and a center point that make radial and axial runout checks practical for most shop needs.

How fine is the resolution?
The dial has.0005in graduations with a stated accuracy of 0.0002in for precise incremental measurement.

Are the feelers interchangeable?
Yes. The variety of straight, curved and center feelers are intended to be swapped for different measurement configurations.