"Planimeter" Quotes from Famous Books
 ... editor of Nouvelles Annales de mathematiques (ser. 2, vol. 3, pp. 414-415) in Paris. He called attention to what he termed "compound compasses," a class of linkages that included Watt's parallel motion, the pantograph, and the polar planimeter. He proposed to design linkages to describe a straight line, a circle of any radius no matter how large, and conic sections, and he indicated in his letter that he ...
— Kinematics of Mechanisms from the Time of Watt • Eugene S. Ferguson |
