(n.) An instrument for the accurate measurement of small differences of height; especially of the differences in the height of the upper surfaces of two columns of mercury or other fluid or of the same column at different times. It consists of a telescopic leveling apparatus (d), which slides up or down a perpendicular metallic standard very finely graduated (bb). The telescope is raised or depressed in order to sight the objects or surfaces, and the differences in vertical height are thus shown on the graduated standard.
Webster's Revised Unabridged Dictionary
| APA | Webster's. (2011). cathetometer. Retrieved September 22, 2026, from http://smartdefine.org/cathetometer/definitions/1985384 |
| Chicago | Webster's. 2011. "cathetometer" http://smartdefine.org/cathetometer/definitions/1985384 (accessed September 22, 2026). |
| Harvard | Webster's 2011, cathetometer, Smart Define, viewed 22 September, 2026, <http://smartdefine.org/cathetometer/definitions/1985384>. |
| MLA | Webster's. "cathetometer" 27 May 2011. Web. 22 September 2026. <http://smartdefine.org/cathetometer/definitions/1985384> |