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Posted

Dial caliper.

You need an inside diameter micrometer, too.

 

It looks like a T, spring loaded...and it will snap to (expand) to the width of the cylinder....make sure you take several measurements...from various spots on the cylinders.

Posted

no thats a snap guage, when the "T" is expanded and re-locked, then you measure it with a micrometer. Our you can use a dial bore guage, but it has to be set up on a micrometer base first to be set for bore dia. then you can measure the runout or taper in the bore.

Any automotive machine shop will have one.

Posted

they make id micrometers that work just like od mics..

 

you twist the handle till it snugs up in the centerline of bore

then read the scribed markings on the handle

you just need to make sure your ends are within the range of your stroke

 

technology has improved over time

the best reading is with a dial bore and a set ring for your master...

other than a machine shop not to many have one laying around :beer:

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