What does this table signify?
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  1. #1
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    Default What does this table signify?

    On the back of my digital callipers there is a table (photo attached). What do the various columns and numbers signify?

    Why are they on the callipers and height gauges?


    Thanks,
    Ken
    img_7503.jpg

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    Thread dia / pitch / minor dia / closest drill size

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    Quote Originally Posted by kenlip View Post
    On the back of my digital callipers there is a table (photo attached). What do the various columns and numbers signify?

    Why are they on the callipers and height gauges?


    Thanks,
    Ken
    img_7503.jpg
    They've been on for as long as I can remember and Whitworth (BSW and BSF) was supposed to be made redundant years ago.

    Explanation? Old habits die hard and/or nobody has ever bothered to complain.

    I once had some made that gave ISO h8 and H8 tolerances for shafts and holes.

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    Thanks, guys.


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