Noun. bow compass (plural bow compasses) An arcograph. A small pair of compasses, one leg of which carries a pencil or pen for drawing circles. Its legs are often connected by a bow-shaped spring rather than a joint.
Similarly, it is asked, what is a spring bow compass?
a compass for drawing, in which the legs are joined by a flexible metal bow-shaped spring rather than a hinge, the angle being adjusted by a screwAlso called: bow–spring compass.
Also, what is the difference between Compass and divider? Compass, divider, and caliper. Technically, a compass is a drafting instrument that has one pen or pencil point and one sharp point that is positioned at the centre of the circle to be described, while a divider, on the other hand, has two sharp points, one for the centre and the other for scribing or marking.
Also question is, what are dividers used for?
Dividers are one of the earliest and most basic types of mathematical instrument. In their simplest form, dividers consist of a jointed pair of legs, each with a sharp point. They can be used for geometrical operations such as scribing circles but also for taking off and transferring dimensions.
Why is it called a compass?
The compass was invented in China during the Han Dynasty between the 2nd century BC and 1st century AD, where it was called the “south-governor” (sīnán ??). The magnetic compass was not, at first, used for navigation, but for geomancy and fortune-telling by the Chinese.