Problem in Measuring

Whats the size of the holes? What are the tolerances? How many holes? Are they all different sizes?

Hell just setup bore gages.

QT:[we have to measure them by caliper or tiple jaw micrometer and stuffs like that which not so accurate method and also its time consuming].

This must be a joke thread...enuffffffff said.

A Brown & Sharpe 13 grinder can grind <.0002 to a rod held between centers for a butterfly grind to make a gauge up to almost 8". because centers are about 8" off the table.
With riser blocks under the centers it can likely make a gauge to 24", yes one would riser block the centers 12" off table and move the grinding head all the way back..(Not sure of how far it goes back)

Yes a surface grinder with a centers fixture instead of the magnet chuck could likely do the same.
yes you would need a drill press to put in the centers in a piece of saw cut bar stock.
And a way to measure perhaps a surface plate and set of Jo Blocks.. or a set of good micron,eaters.

Yes you would need to hire a grinder hand to make this work and I am retired.... but for a price if you are not in a war-zone I would come teach your guys to make this work.

looks like a decent shop...
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