Alidade (Noun)
Meaning 1
Surveying instrument consisting of the upper movable part of a theodolite including the telescope and its attachments.
Classification
Nouns denoting man-made objects.
Examples
- The surveyor carefully adjusted the alidade to ensure precise measurements between the reference points.
- In making a traverse, the alidade is so levelled on a theodolite that its telescope can turn freely in a vertical plane.
- The alidade supports the telescope, which can rotate in the vertical plane to measure angles of elevation.
- She found that the old theodolite had a misaligned alidade, which compromised the accuracy of her measurements.
- The survey team had to remount the alidade after realising that it had been installed upside down on the theodolite.
Synonyms
Hypernyms
Meaning 2
Surveying instrument used with a plane table for drawing lines of sight on a distant object and for measuring angles.
Classification
Nouns denoting man-made objects.