Question

Define cross staff survey​

Answer 1

Answer:

In surveying, an instrument consisting of a staff carrying a brass circle divided into four equal parts or quadrants by two lines intersecting each other at the center.

Answer 2

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cross-staff In surveying, an instrument consisting of a staff carrying a brass circle divided into four equal parts or quadrants by two lines intersecting each other at the center. At the extremity of each line perpendicular sights are fixed, with holes below each slit for the better discovery of distant objects.