Civil Engineering :: Surveying
- The prime vertical passes through
- The relation between the air base (B), photographic base (b), flying height (H) and the focal length (f) of a vertical photograph, is
- Latitude of the observer's position is equal to altitude of
- The parallax equation Δp = BmΔh/H - h is applicable to entire overlap of the photographs only if parallax is measured
- If the length of a chain is found to be short on testing, it can be adjusted by
- In the double application of principle of reversion, the apparent error is
- Closed contours, with higher value inwards, represent a
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