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
REAR AXLE… CARS
Using a wheelbarrow to transport the cement mortar or concrete, provide in advance a simple revision of this unicycle and not sustainable truck — make for her two-wheeled "rear axle"....
NOT WORSE THAN THE CONDITIONING
I have developed a mini system is to automatically maintain the desired temperature and air humidity in the oven, covered boxes, as well as in greenhouses or other spaces. The design of...
