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Levelling - Levelling instruments:
Unit 1- Surveying
Levelling
Levelling instruments:
The instruments commonly used in direct levelling are
Levelling instruments:
The instruments commonly used in direct levelling are
- A level
- A levelling staff
- 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 its centre of run
- A tripod – To support the instrument
- Dumpy level
- Wye (Y) level
- Reversible level
- Tilting level
Last modified: Thursday, 12 May 2011, 5:49 AM