When the scale of a map is shown through a proper lengthy line, it is called ______?

When the scale of a map is shown through a proper lengthy line, it is called ______?

جب کسی نقشے کا پیمانہ مناسب لمبی لائن کے ذریعے دکھایا جاتا ہے تو ، اسے ______ کہتے ہیں؟
Explanation

A linear scale uses a line marked with distances to represent the scale on a map.

It helps measure actual distances directly by comparing with the marked segments on the line.