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Watchmakers High Quality Double Eyeglass. For efficient work, the strength (magnification) of the eyeglass must be adapted to each individual job. A reliable magnification should be used for ordinary work, this avoids eye-strain! Eyeglasses with a high degree of magnification are to be used for limited periods only. Extra strong eyeglass for close and high magnification.x15 Magnification As you will see, our eyeglasses are available in different strengths; you can thus choose the one that suits you best. We would advise you to keep a set giving different degrees of magnification. This eye glass has a screwed rim. Bergeon No. 1458
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