An appendage to a surveying or observing instrument, serving to guide the eye.
| 单词 | θ7436 |
| 释义 | the world > the earth > earth sciences > geography > map-making > surveying > [noun] > surveying instruments > part of a surveying instrument > sight on a surveying instrument (3) sight1559 An appendage to a surveying or observing instrument, serving to guide the eye. vane1594 A sight of a levelling-staff, forestaff, quadrant, or other surveying instrument. target1877 Applied to various objects resembling a target or shield. The sliding sight on a levelling staff; a vane. |
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