Starrett telescoping gauge diffrence - Page 4
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  1. #61
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    Quote Originally Posted by crazygoat View Post
    1" and under I was not so good at.
    I'd agree with you about good to a half ... that's what I'd get too. But I was better at smaller holes, the big stuff is hard to hold everything. You have big hands ?

    I think we should accept Gordon's superior knowledge tho. Came across a good shot of him measuring a bore, he seems to know what he's going. Had plenty of practice I guess ...

    gordon_measures_a_bore.jpg

    really like the special #3 Danish QC Outfit, too. Very professional looking

  2. #62
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    I ran my hands through QC one time. Best as they could tell was somewhere between medium to small! Most of the bigger holes the part was locked down pretty good so the only thing moving was me. In all truthfulness though, some Monday mornings, not quite so good!

  3. #63
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    Quote Originally Posted by SeaMoss View Post
    I think we should accept Gordon's superior knowledge tho. Came across a good shot of him measuring a bore, he seems to know what he's going. Had plenty of practice I guess ...

    gordon_measures_a_bore.jpg
    Truth be told I was looking for you but you were too far up.

  4. #64
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    Quote Originally Posted by AlexO View Post
    The biggest problem with telescoping gages is tapered holes.
    As with any ID measuring tool it wlll give you the measurement where the 2 or 3 points contact.

  5. #65
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    Quote Originally Posted by Havic9 View Post
    I'm looking to upgrade from a set of almost useless Chinese gauges. Can anyone tell me the diffrence between the Starrett 229 series and the 579 series telescoping gauges? Thanks
    I bought set of starrett gages, secondhand but looked like new. I was not impressed, the telescoping action was rough and the extensions had a lot of side play. Something like that, dependent on feel, should be silky smooth.

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  7. #66
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    Quote Originally Posted by Lanso View Post
    As with any ID measuring tool it wlll give you the measurement where the 2 or 3 points contact.
    Very true but "the measurement" should maybe be "a measurement". Any movement will give a new measurement.

  8. #67
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    In my opinion, telescopic gauges are quite unsuitable for measuring tapered bores. That takes nothing away from their general utility.

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    Quote Originally Posted by billmac View Post
    In my opinion, telescopic gauges are quite unsuitable for measuring tapered bores. That takes nothing away from their general utility.
    I think the point was if the hole was slightly tapered and not "a tapered bore". One is unfortunate, the other deliberate.

  10. #69
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    Telescopic gauges allow you to detect, but not accurately measure, slightly tapered bores.

    To accurately measure tapered bores, say at a series of specific defined depths you need some fairly fancy equipment. What did you have in mind for this task? - a CMM?


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