It is the radius
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 called the "center"
Clear and dimensional accuracy in marking out is critical in all circumstances. You spend the time marking something out then you or others should be able to see it clearly. Drawing requirements must be followed at all times you mark out to the tolerance the drawing states.
A drawing or marking that represents a feature on a map is called a symbol. These markings make up the map key.
Symbol/Symbols
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it is for marking and measuring a distance
It would be a hole punch.
It is a marking gauge.
Folding the paper and aligning marks seen through them marking points Drawing line segments apex.
The middle thing on a compass is called the compass rose. It is the circular marking that shows the cardinal directions (north, south, east, west) and sometimes intermediate points on a map or compass.