India and Adjacent Countries Series
Topic: Topographical Maps: Relief Representation and Interpretation · NCERT: Class 11, Ch 5 "Topographical Maps"
Meaning
The India and Adjacent Countries Series was a set of topographical maps that the Survey of India once made for India and its neighbouring countries. A topographical map is a detailed, large-scale map that shows both natural and man-made features. The series ended after the Delhi Survey Conference of 1937, when the Survey of India stopped mapping neighbouring countries. Indian sheets still keep the series' old numbering and layout. That is why Indian sheet numbers look the way they do today.
Example
NCERT's exercise sheet 63K/12 covers parts of Mirzapur and Varanasi districts in Uttar Pradesh. It still carries a number from this old system. The number 63 marks the big parent sheet, K marks a one-degree part of it, and 12 marks a smaller part of that.
Don't confuse with
- International Map Series of the World: this covers the whole world at 1:1,000,000 and 1:250,000. Indian sheets have followed its specifications since 1937. The India and Adjacent Countries Series was India's own older series, and it only lives on in the sheet numbering.