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LEVELLING INSTRUMENTS

LEVELLING INSTRUMENTS USED
a) A level and
b) A levelling staff.

LEVEL
The purpose of a level is to provide a horizontal line of sight. A level consists of the following four parts: -
 A telescope to provide line of sight
 A level tube to make the line of sight horizontal
 A levelling head to bring the bubble in centre
 A tripod to support the instrument.

TYPES OF LEVEL
1. Dumpy Level                2. Wye Level
3. Reversible Level            4. Tilting Level




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