Proportional Dividers

A useful tool is called the proportional dividers, the legs of which are hinged together intermediate the ends, so that the pivotal joint is adjustable. By means of this tool the scale of work may be changed, although its widest field of usefulness is work laid off on a scale which you intend to reduce or enlarge proportionally.

Proper Terms Representing Objects facebooktwittergoogle_plusredditpinterestlinkedinmail