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  1. #31
    Join Date
    Aug 2011
    Location
    Melbourne
    Posts
    4,779

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    Hi Alan,

    This square is 250mm long so it's maximum allowable deviation from squareness is 5um.

    I'm not sure why it makes mention of 160mm at the top of the page.

    Simon

    Sent from my SM-G970F using Tapatalk
    Girl, I don't wanna know about your mild-mannered alter ego or anything like that." I mean, you tell me you're, uh, super-mega-ultra-lightning babe? That's all right with me. I'm good. I'm good.

  2. #32
    Join Date
    Mar 2014
    Location
    South of Adelaide
    Posts
    1,225

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    I may have access to one of these master squares that has a current calibration certificate tomorrow.
    https://www.ebay.com/itm/Coorstek-Ce...-/332637672065
    Hopefully i will have time to check my ebay square, it will be interesting to see exactly how square it is.

  3. #33
    Join Date
    Jul 2006
    Location
    Athelstone, SA 5076
    Posts
    4,255

    Default

    Quote Originally Posted by snapatap View Post
    I may have access to one of these master squares that has a current calibration certificate tomorrow.
    https://www.ebay.com/itm/Coorstek-Ce...-/332637672065
    Hopefully i will have time to check my ebay square, it will be interesting to see exactly how square it is.
    How long will you have access...i'd like to see if mine is good or not?

  4. #34
    Join Date
    Aug 2011
    Location
    Melbourne
    Posts
    4,779

    Default

    Wow. That's no carpenter's square!

    I will be very interested in how your square stacks up compared to its "certificate"

    Geeezzz you get to play with some fun stuff!

    Simon

    Sent from my SM-G970F using Tapatalk
    Girl, I don't wanna know about your mild-mannered alter ego or anything like that." I mean, you tell me you're, uh, super-mega-ultra-lightning babe? That's all right with me. I'm good. I'm good.

  5. #35
    Join Date
    Mar 2014
    Location
    South of Adelaide
    Posts
    1,225

    Default

    So i didn't get a chance to test my square against the master, but i did a rough check on the mill that just got re aligned and got about .01mm of error. i will try and do a better check next week.

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