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 596
dirneter, invented by Messrs. Peaucellier and Wagner, of the imperialtopographical corps of France. This is a horizontal rale bearing strongly-marked divisions, which are numbered from the centre in both directions,the whole being supported by a vertical rod in the manner of a signalmark on an… … X> HiiBninBMHtHBj Brunners Stadirneter. apparatus is represented in Fig. 120. In the focus of the eye-piece aretwo fixed micrometric lines, and the determination of distance is madeby observing how many divisions of the stadirneter are embraced betweenthese lines. The manner of observing is as…
Machinery · Scientific apparatus and instruments
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