[Jewelry making - Article 00298] - Re: [Orchid] [Looking for] The "Jewelr's Eye" (like Jemeter?)

[Downey]

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Howdy Bram,

    	The Sarasota Instruments co. is defunct. The 2 types of Jemeter
    they built occasionaly show up for sale. The digital version is
    superior to the 'analog meter'-type. recently some of both have been
    sold on ebay. The price is outrageously high considering kassoy
    sells a new reflectivity meter (instead of measuring critical angle
    like a Pulfrich refractometer or Brewster's Angle like the $1800
    GAGTL meter)for $150. the Jemeter, hanneman's meter and the Kassoy
    (Presidium) unit measure luster or 'relative reflectivity' and,
    while generally 'good enough' they have the drawback of being
    affected by poor polish, and not being able to show birefringence. 

fyi
Carl
1 Lucky Texan


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