
Ruler compass
Measure Without a ruler
the existing campass couldn`t draw a circle of wanted size
without a ruler. as well, one must have drawn a circle by measuring
with a ruler and set the wanted size whenever you drew a circle.
Ruler compass can draw a wanted size circle easily without measuring
the size with a ruler every time.
without a ruler. as well, one must have drawn a circle by measuring
with a ruler and set the wanted size whenever you drew a circle.
Ruler compass can draw a wanted size circle easily without measuring
the size with a ruler every time.

you need a ruler to use a compass we can`t draw
a circle with wanted size of radius

1. When you move a leg of the
compass, the gradation will revolve
to show the radius.
compass, the gradation will revolve
to show the radius.
2. When you move a leg of the copass, the
gear connected with the leg of the compass
will express the radius by moving the center
axis.
gear connected with the leg of the compass
will express the radius by moving the center
axis.

