In the measurement of any distance, for the purposes of any 1[Central Act] or Regulation made after the commencement of this Act, that distance shall, unless a different intention appears, be measured in a straight line on a horizontal plane.
Central Act · India · General Rules Of Construction
Section 11 Measurement of distances
General Clauses Act, 1897 · Edition: Archived India Code central text
Judgments on Section 11
LOK 2012 (7) SC 261 · Supreme Court of India