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 218
and constructedby Coradi. In these, the integrating wheels roll on spheres, and thus anyerror due to inequalities of the paper is eliminated, and further, the wheelshave a motion of rolling only. Another integrometer is that of Desprez,2 in which there is only oneintegrating wheel, which performs… … This integrator employs three glass spheres. It is used for determiningthe area, moment of stability, and moment of inertia of plane figures. (2) A Radial Integrator. By E. M. Horsburgh. igo SECTION G III. Planimeters. By G. A. Carse, D.Sc, and J. Urquhart, M.A. Numerous instances occur in the…