Question

Distinguish between the following : The quarter- inch and the one inch sheets as drawn by Survey of India.

Answer 1

Hint: Survey of India is India’s central engineering agency in charge of mapping and surveying. It was set up in 1767 to help and consolidate the territories of the British East India Company, it is among the oldest engineering Departments of the Government of India, The Surveyor General of India is the head of this organization and the head of this department is Gen Girish Kumar.

Complete answer:
Purpose of survey:- A survey is a research method used for gathering data from a predefined group of respondents to produce information and inspect the various topics of interest. They can have multiple purposes, and researchers can conduct it in many ways depending on the methodology that they choose and the study's goal.
The Survey of India used systematic arrangements to plan and draw the topographic maps.
In quarter – inch maps , a scale of 4 miles is taken to an inch. It is also called as a one-in-million sheet map.In quarter – inch maps , each and every sheet extends over 6 degrees of longitudes and 4 degrees of latitudes in which elevation is displayed in meters.
The one –inch sheets are the sheets when the degree sheets are sub-divided into 16 equal sheets, each representing an extent of 15 inch. On this scale 1 mile is equal to 1 inch.

Note:The headquarter of Survey of India is situated in Dehradun.
According to the Intergovernmental Committee on Surveying and Mapping in short ICSM, there are five different types of maps: General Reference, Topographical, Thematic, Navigation Charts and Cadastral Maps and Plans.