At small works use a magnifying glass, placed for convenience in a frame of vinyl plastic. In a square plate, 4 mm thick, cut a circular window with inside recess (groove) in which the lens is held securely enough. And for protection from scratching the glass rolled leather sheath in which the plate is secured by a rivet. In the plate made a few cuts-snags — thanks to them, the lens is easily removed from this soft box.
O. EVDOKIMOV, Saint-Petersburg
Recommend to read
PIONEER SCHEMATIC MODEL OF THE AIRFRAME
The most important thing: the Artek pioneer simple, easy to control and good flying. And the material always at hand: cardboard, pine or lime bar, tissue paper, rake, a few small studs,...
THE FIRST SOVIET LIMOUSINE
Luxury car ZIS-101. In the early 1930-ies in the Soviet Union there is an urgent need in an Executive car of a domestic production. The fact that pautinopodobnoj elite in the Soviet...
