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
Recommend to read
Lever to help
Sometimes a load lifted by a crane beam or winch (when replacing an engine in a car, for example) needs to be lowered slightly to the side from the suspension point. In this case, an...
Takes off like a real one
Many teenagers in summer camps and model aviation clubs enjoy making and launching thermal aerostats or, as they are also called, Montgolfier balloons filled with hot air. Everyone who...
