A compass perhaps?
Geometrical compass To draw a perfect circle, and another compass for determining directions
The best tool to locate the center of a circle would be a compass. By placing the compass on the edge of the circle and drawing an arc, then repeating this process from another point on the circle, the intersection point of the arcs will give you the center of the circle.
A compass is used to construct a perfect circle of 360 degrees.
A Staedtler compass (a typical example of a drawing compass) has a lead fastened in one arm to draw the outline of a circle. A metal point fastened in the second arm is pressed lightly on the paper on which the compass then pivots.
A compass perhaps?
For drawing a circle.
Geometrical compass To draw a perfect circle, and another compass for determining directions
You use a compass to draw an accurate circle.
The best tool to locate the center of a circle would be a compass. By placing the compass on the edge of the circle and drawing an arc, then repeating this process from another point on the circle, the intersection point of the arcs will give you the center of the circle.
A compass is used to construct a perfect circle of 360 degrees.
Compass. Needle point with adjustable gauge and pencil holder.
A Staedtler compass (a typical example of a drawing compass) has a lead fastened in one arm to draw the outline of a circle. A metal point fastened in the second arm is pressed lightly on the paper on which the compass then pivots.
The radius
The distance between the pivot point and the marking point of a compass is the radius of the circle being drawn.
It is an instrument that tells you which direction is north, or a tool for drawing a circle. It can also mean range.
It is the distance between the two points.