
The sister with the cutting it took to draw a circle the diameter of which more than allows a compass. Rescued… a school ruler, which my dad drilled hole (see figure). The first of them, playing the role axis, is inserted a pin or awl, and the other to the desired distance from the tip of a pencil. Please circle any, up to 30 cm radius.
A. KOLTSOV, Arkalyk, Kazakhstan
Recommend to read
THE ITALIAN “BOOM” IN SPAIN
The beginning of a new period in the development of Italian fighter aircraft was the development of the company FIAT in 1936, the plane of the monoplane FIAT G. 50. The fact that Italy...
THE TRAILER-TRUCK
Trailers for passenger cars, turning them into a small truck, particularly popular with rural residents and owners of summer cottages. Naturally they greatly facilitate the delivery of a...