Opisometer vs. Curvimeter
Opisometernoun
A device for measuring the length of curved lines, such as on a map.
Opisometernoun
An instrument with a revolving wheel for measuring a curved line, as on a map.
Opisometer
An opisometer, also called a curvimeter, meilograph, or map measurer, is an instrument for measuring the lengths of arbitrary curved lines. A simple opisometer consists of a toothed wheel of known circumference on a handle.
Curvimeternoun
A device for measuring the length of curves, such as on a map
