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 232
Fig. 14.—Compensating Planimeter Papetos. Compensating Planimeter with graduated tracer arm, adjustable to itsfull length ; adjustment by vernier ; slow motion for accurate setting toany scale and to allow for shrinkage of paper. 3. Compensating Planimeter Parapet … 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
