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Bore gages

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steamer:
Just picked up 2 sets of bore gages.     One 0.4" to 0.7" and the other 1 to 1.75   Both to "tenths"    In addition to the bore tri mike that sits in the middle of the range for the bores on the 917....I think I have the measurement part sorted out.  Can't make what you can't measure right?

It's a start....bought used off the bay after some searching....got a great price on them!

Dave

crueby:
Nice!  Very handy tools - I got a more modern cheap version a while back, looks like same mechanism and sets of accessory fittings, though yours looks like a nicer set. Perfect for both measuring the bore as well as checking it to be parallel. 

Vixen:
Hello Dave,

Nice, you had a good win there. Did you get or have you got the calibration rings which allow you to make absolute measurements.

I have a nice Mitutoyo three point but no calibration ring (yet). So for now, it is used for comparative measurements only.

Mike

steamer:

--- Quote from: Vixen on April 22, 2025, 10:27:44 PM ---Hello Dave,

Nice, you had a good win there. Did you get or have you got the calibration rings which allow you to make absolute measurements.

I have a nice Mitutoyo three point but no calibration ring (yet). So for now, it is used for comparative measurements only.

Mike

--- End quote ---

Working on those now.....15mm and 32 mm are high on the list....thow both can be set to a micrometer for comparative work   I have a .846 ( 21.5mm) one already...amazingly

bent:
Lovely devices, should work a treat.  We have a 3/4" range hole mic (Mitutoyo 3-pt) that is lovely for one of our more precision bits of valve trim here at work, but the price of those makes me swallow hard every time I pick it up.

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