A CIRCLE WITHOUT A COMPASS

THE CIRCLE WITHOUT A COMPASSThe 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

  • FOUR WHEELS GOOD, EIGHT IS BETTER!FOUR WHEELS GOOD, EIGHT IS BETTER!
    To our seats and climate such a car — a real find. About its patency can be judged by one picture, without looking at the table of specifications. Even a layman will notice the high land...
  • THE DIVIDING HEADTHE DIVIDING HEAD
    This head is easy to do if your workshop has a lathe and welding machine, Setting it to any milling machine that can handle the head bolts penetrate the splines and spline grooves, cut...