Answer: PROPORTIONAL DIVIDERS
Explanation: Proportional dividers are equipments which are used transfer the measurements of an object when transferring from a 3D(three dimensional) to another surface,it is used by Artists,draftsman. The main aim of proportional dividers is to maintain scale ratios as have been made on a paper. etc.
The Proportional dividers are also used to enlarge or reduce the size of an object without doing any mathematical calculations or scale manipulation. Proportional dividers have aided the job of artists as it has helped them to recreate the object in their scale of preference.