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Watchmakers Eyeglass Standard. Bergeon 4422 Watchmakers Economy 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 eyestrain! Eyeglasses with a high degree of magnification are to be used for limited periods only. As you will see, our eyeglasses are available in different strengths; you can thus choose the one that suits you best. These glasses are our best seller and we would advise you to keep a full set giving different degrees of magnification. A lens for every job? This eye glass lens is secured by an internal ring.
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