Lesson 23 Basics of Tacheometry and Stadia System

Objective of Lesson 23

Tacheometry

Uses of Tacheometry

Instrument

Systems of Tacheometric Measurements

Stadia Method or Fixed-hair Method

Principle of Stadia Method

Determination of Tacheometric Constants

Anallactic Lens

Inclined Stadia Measurements

Uses of Stadia Method

Errors in Stadia Measurement

Exercise 23

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