Question

Main features of the Arbitrary grid system.​

Answer 1

☆ Main features of the Arbitrary grid system :

• The main features of the arbitary grid system drawn on the topo sheets on the scale of 1 : 50,000 are as under -

➢ The southwest corner (bottom left) of the topo sheet is always taken as the starting point.

➢ The grid lines running vertically (from north to south) are called the eastings, as these lines lie towards the east of the southwest corner.

➢ The grid lines running horizontally (from east to west) are called the northings, as these lines lie towards the north of the southwest corner.

➢ The eastings and the northings intersect to from a network of squares called the grid system.

➢ Each square in the grid system is called a grid square.

➢ The point of intersection between the eastings and northings on the topo sheet is called the coordinates.

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Answer 2

Answer:-

• The lines that run vertically are called eastings and those that run horizontally are called northings.
• Eastings and northings cross each other to form a square called as a grid square.
• The starting point or the reference point is the exteme south-west grid or the one at the bottom left corner.