单词 |
cathetometer |
释义 |
cathetometer|kæθɪˈtɒmɪtə(r)| [f. Gr. κάθετο-ς cathetus + -meter. Cf. F. cathétomètre.] An instrument for measuring vertical distances, esp. small differences of level of liquid columns in tubes.
1864in Webster. 1871B. Stewart Heat §63 The difference of level between the surface of mercury in the two tubes was read by means of a cathetometer. 1879Thomson & Tait Nat. Phil. I. i. §429 The Cathetometer is used for the accurate determination of differences of level. |

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