Often you have to handle the fine details of any corrosive liquids, vapours which are harmful to the eyes, and have to work close low, which further increases the risk. Need goggles, but at the same time it is desirable to have a magnifying glass.
If the frame of glasses is a rubber one glass is simply replaced with a suitable lens. Will be able to use a clock and a magnifying glass, if you make it a transitional plastic or rubber band, tucks under the edge of the rim goggles.
A. VINOGRADOV, G. M o g I l e in, Belarus
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