An instrument for measuring distances and heights, consisting of a square rod about three feet in length with a cursor which slips on the staff.
| 单词 | θ117502 |
| 释义 | the world > relative properties > measurement > measuring instrument > [noun] > for measuring distances and heights (1) Jacob's staff1777 An instrument for measuring distances and heights, consisting of a square rod about three feet in length with a cursor which slips on the staff. |
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