an instrument used in surveying and consisting essentially of a telescope fitted with a spirit-level.
| 单词 | θ7421 |
| 释义 | the world > the earth > earth sciences > geography > map-making > surveying > [noun] > surveying instruments > for levelling (2) levelling-instrument1690 an instrument used in surveying and consisting essentially of a telescope fitted with a spirit-level. dumpy level1838 a spirit-level used in surveying, having a short telescope with a large aperture. |
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