Supporting > Tooling & Machines
Bore gages
steamer:
--- Quote from: bent on April 23, 2025, 06:13:20 PM ---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.
--- End quote ---
I have a tri mike but with a much more narrower range, and even used they're expensive! But It's NICCCCCCCCE!!!!! I bought this one about 3 years ago for measuring the bores on the 917 build, with a ring gage to match.
Picked up this Blade mike for piston ring grooves specifically....it's got a touch of light rust here and there, but that will clean up.
steamer:
And I found some ring gages!
32mm -.0002"
and
15mm
They appear good, and the seller guarantee's they'll check out.
Admiral_dk:
Expensive Toys Tools - Always nice to have ;D
Regarding calibration - I remember our Physics Teacher telling a story about Swedish Gauge Blocks and Ford Motor Company.
Ford bought yet a good amount of Gauge Blocks (for a new department) and they complained that they where NOT to Specs.
So the Manufactor got them back and did a Thorough Inspection and they where much better than promised => back to Ford.
Ford Inspected them again and found the same errors as before => send them to Sweden again. Repeat repeat ....
So when Ford complained the third time - one of the Swedish Engineers suddenly got suspicious and asked what the temperature was in Fords new Laboratory ..??
Reply - a constant 25C ....
Aha - Please read the Spec-sheet or look at the Box : Calibrated and should be used @ 20C !!!!
I hope that your new Rings are good and accurate Dave ;)
Per :cheers:
steamer:
Well all the tools I bought are lovingly pre owned which goes for 98% of my equipment. Ring gages were $40 shipped....but it is nice to have....
steamer:
It all falls.under the heading of if I.cant measure it I can't make it.....
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