Hobbyists and modelers know how hard it is without a special container to connect several dry cells “373” in the battery. Reliable and easy temporary container is obtained from the segment of old Bicycle inner tube. Its length must be equal to the total height of all elements (see figure). The first element of push to the middle of the tube, and then both sides stick to it other sources of supply.
A. KUPRIYANOV, a pupil of the 7th CL., g. Omsk
Recommend to read
ADJUSTABLE STOOL
Equally uncomfortable to sit and when feet do not reach the floor and if the seat is very low. I think everyone has noticed that, sitting behind the piano, the pianist is rotating the...
SVATONOVICE
Remember as a child playing with blocks. He puts down one, two, three, top zagromozhdaet yet — and it turns out a car, home or tower. Cubes rebellious, impatient child — the structure...
