[Jewelry making - Article 00004] - Re: [Orchid] Micrometer

[jesse brennan]

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    This is a difficult problem as Gage number is not an exact
    measurement but a measurement with  relatively wide tolerances.  For
    quite a while now it is suggested that materials be sold to a
    decimal measurement for thickness. Precious metals NEED to be sold
    by weight because of the tolerance allowed for thickness by gage
    standards. If you measure much  material with  reasonably good
    tooling ( current digital micrometers)   you  will get a wide range
    of thicknesses within a "gage"size. You will often find a  material
    that is within tolerance but is not the conversion table thickness. 
     how close the tolerance is actually held to  the table number
    depends on a lot of factors controlled by the manufacturer and his
    tooling.    You can buy a metal " gage"  where the metal fits in a
    slot or not for about $15.00. a decimal indicating caliper  from $20
    up,   a snap type decimal indicator for about $200 .  For what you
    are asking  you would need  one of the decimal types with an output
    to a PC programed with the gage numbers with the tolerance range
    included in a special program  system  then costing  about $X,000.00
    to $ X0,000.00.   ???? Jesse

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