Neoteck Bore Gauge Set Digital Indicator Dial Bore Gauge (2-6"/0.0005") Measurement with Self-Centering Dial, Carbide Anvils,and Insulated Grips for Deep Engine Cylinder Measurement-Silver

I used this digital bore gauge to measure my piston bore, and it performed flawlessly. The digital readout is clear and easy to read, and the gauge provided consistent, precise measurements. It helped me ensure that everything was within spec during my engine rebuild. The build quality is solid, and it feels like a high-quality tool. Definitely worth the investment for anyone doing precision work. Highly recommended! Very accurate!

My sunning dial bore gauge is being repaired, but I need an economical way to do some Honda cylinders. Tool worked great, nice storage box, and very reasonable price! Would be a great bore gauge for the average home engine builder.

Accurate to 0.0005", or 5/10,000", or 0.01mm. Or "half a thousandth".In other words, the precision leaves just a little too much uncertainty regarding some particularly tight tolerances in my rebuild.Otherwise, great product all around.It's a good value, but it was the wrong tool (for me) to cheap out on.Just a matter of time until you need it and the batteries are dead though. Sure to be annoying.

Bought this for my engine rebuild. I had to figure out how to measure with it as the instructions are not the clearest. It’s good to 3 decimal points, plus a half thou when exceeded. This was enough for my purposes. If I need a more accurate value, I use a Plastigauge.Basically, you first need to find the right stem, potentially in combination with a spacer, that fits in the ID you wish to measure. Note that the little nib on the opposite side of the stem needs to touch and be able to deflect within the ID of the cylinder you’re measuring. Once you have the ‘dial’ indicator rigged properly, you then measure the length of the measuring end, and to determine the actual diameter, subtract the indicated ‘compressed’ value from the uncompressed length of the measuring tool. My engine piston sleeves definitely need to be replaced.

It's digital, but as long as you have a good setup with a micrometer for setup. It works

Makes measuring bores easier as heck.For the price, it is worth it and I get repeatable measurements to .01mm Everytime. Using a telescopic gauge took me 30+sec for an inaccurate reading, this literally takes 2 sec.Only downside, is the digital dial indicator stays on for about 3 minutes until it shuts off which is good for battery, but it doesn't have any memory, it rezeros itself and I have to zero it out each time I go to measure after honing. The stem is a different size from my other quality miyutoyo dial

The product was as expected. I am satisfied at this point.

I went to use these and found out you have to have your own micrometer to zero out the instrument. So if you don't have a micrometer that goes to the full range of the instrument you're just sorry out of luck