Cathetometer - Definition - Law Dictionary Home Dictionary Definition cathetometer

Definition :

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