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Cathetometer is a 12 letter word which starts with the letter C and ends with the letter R for which we found 1 definitions.

(n.) An instrument for the accurate measurement of small differences of height; esp. 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.
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