Unique and extremely useful, the Shindler Loupe lets you estimate a stone's
    weight, even if it is still mounted. It is an especially valuable tool for
    jewelers needing to estimate a stone that is still mounted in a piece of
    jeweler i.e. bracelet or ring. Naturally, it is also ideal for estimating
    loose stones.
    Easy to use, it features a center scale that doubles as a 6.5mm gauge to
    evaluate a stone's weight and size up to 1ct. Simply place the stone face
    down on the inside of the replaceable 2.5cm clear tape protected screen.
    Delivery of the Shindler Loupe includes a vinyl plastic booklet with
    instructions and calibration charts.
    See more about the Shindler Scale above in "About Shindler".
    - Magnification 10x linear (virtual image measured at standard 25 cm.)
 
    - Dimensions LxWxH (a) closed 3.6 x 2.2 x 1.2 cm. (b) open 3.6 x 2.2 x
        3.3 cm
 
    - Weight 30g.
 
    - Base Opening: 14 mm square
 
    Inventing the Shindler Loupe, Bernard Shindler developed an ingenious
    solution to a problem in the jewelers trade that had never been
    satisfactorily solved. Shindler created the unique and very popular
    "Shindler Scale" which embodies specially graduated scales in a magnifier
    and thus enables the likely weights to be read off quite straightforwardly,
    even while the stones are still mounted.
    
    Bernard Shindler enjoyed a long career in the diamond trade, which he much
    loved and in which he had many years of experience in inspecting and
    valuing precious stones (mostly in preparation for mounting in jewelers
    items). Combined with many years experience in precision engineering, his
    insight changed the way jewelers work and estimate precious stones.