||Orthography, is in accordance with the orders of the Government of India dated 20th September 1873.
Numerals, Thus 43 or 160 0.1.2. & c. are the revenue survey numbers of the fiscal divisions. Thus ▲ are the heights in feet of trigonometrical stations above the mean sea level. Thus on made roads ∥ 141.6 are levels in feet furnished by the executive engineer Ahmedabad and reduced to Mean Sea Level. Thus ⊙ B.M. 97.5 are levels in feet furnished by the Executive Engineer for irrigation Ahmedabad and reduced to mean sea level. Thus ══ 26 & 13 are mile stones and indicate the number of miles from the termini mentioned on the margin where the road leaves the map. Thus 15r indicate the relative height in feet of banks to beds of water courses.