Surveying
If the intercept on a vertical staff is ob-served as 0.75 m from a tacheometer, the horizontal distance between tacheometer and staff station is

7.5 m
75 m
25 m
50 m

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Surveying
The length of a chain is measured from

centre of one handle to centre of other handle
outside of one handle to outside of other handle
inside of one handle to inside of other handle
outside of one handle to inside of other handle

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