Machinery and processes of the industrial arts, and apparatus of the exact sciences (1869)
Barnard, Frederick A. P. (Frederick Augustus Porter), 1809-1889 · Washington, Govt. print. off. · leaf 638
Vertical view. Fig. 143. … Oppikoffers Planimeter—end view. its motion of revolution is transferred to the wheel W. A rack andpinion might evidently be substituted for this cord. In the machine ascomplete there is a mechanical register connected with the small wheelW, and with the sliding-rod, which records the revolutions…
Machinery · Scientific apparatus and instruments
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