Pocket calipers?...

Discussion in 'Gold Coins' started by srebrni, Feb 26, 2011.

  1. srebrni

    srebrni New Member Silver Stacker

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    Looks like smallest calipers I can find are still a 25-30cm long box. Hardly pocket size.

    Isn't there something small, coin specific, that can complement the pocket coin scale? Anyone knows of any shops that sell scientific instruments in Melbourne?
     
  2. Sticks

    Sticks New Member

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    The smallest ones I could find are 4 inch from Singapore. Less than $20 delivered.
    http://cgi.ebay.com/4-inch-LCD-Digi...278?pt=LH_DefaultDomain_0&hash=item1c180b0776

    If they still to large, you can open them up to max diameter you will need, mark the slider, close the jaws then cut off slider to mark you made.

    To hard to cut with Hacksaw you will need a emery cutting disk.
     
  3. bennybbc

    bennybbc Member Silver Stacker

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  4. Sticks

    Sticks New Member

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    Here's a different style that may be what you want

    310299164492

    Only opens to half inch - so maybe only good for thickness .
     
  5. srebrni

    srebrni New Member Silver Stacker

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    Meh. Too big, all of them.

    Has anyone tried optical comparators? Single reticle to measure diameter and thickness should be enough:

    http://www.electro-optix.com/opticaltools.html

    How fiddly are those to use, i.e. in order to get consistent measurements? And I suppose we need scale size to be 40-50mm to be able to handle larger coins.

    But I like the size, much better mobile solution, as compared to calipers.
     
  6. srebrni

    srebrni New Member Silver Stacker

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    Since I wasted all morning surfing for this, perhaps I can save that time to others interested.

    Seems the problem with scale loupes and comparators is that the measurement scale only goes to 30mm for cost effective priced items.

    Which is just slightly under most coin sizes I'd be interested in :/

    I've found some bulkier versions that can handle 40-58mm field of view, but not sure what the scale limit is. Price rules it out anyway.

    http://www.peakoptics.com/index.php?main_page=product_info&cPath=65&products_id=13

    If anyone can think of something else, let us know.
     

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