Modern instruments and methods of calculation : a handbook of the Napier Tercentenary Exhibition (1914)
Horsburg, E. M. (Ellice Martin), Napier Tercentenary Exhibition (1914 : Edinburgh, Scotalnd) · London : G. Bell · leaf 233
Fig. 15.—Compensating Planimeter Parapet. Ball-pole Compensating Planimeter like No. 2, but with device for ad-justing the parallelism of the axes by the user. 204 SECTION G 4. Universal Planimeter and Radial Averaging Instrument … Fig. 16.—Universal Planimeter. The Universal Planimeter is designed for the computation of areas andthe determination of the mean ordinate of diagrams of self-recording ap-paratus drawn either on strips or on circular charts. The instrument is essentially a Compensating Planimeter with a…
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