Physical laboratory experiments : mechanics, optics and heat (1917)
Goodwin, H. M. (Harry Manley), 1870- · Boston : G. H. Ellis Co., Printers · leaf 15
onsists of two arms hinged together,one of which is pivoted at the end by the needle point F, whilethe other, the tracer-arm, carries a point P, which iscaused to trace the outline of the area to be measured. Theplanimeter rests at Z) on a roller-wheel so mounted on thetracer-arm that it slides… … Fig. 3. number of complete revolutions made by the wheel D isrecorded on the dial G, while fractions of a revolution maybe noted by means of the vernier E, which reads to 0.001 ofa revolution of D. The effective length of the arm A can bevaried by clamping the sleeve carrying the hinge and…
Physics · Mechanics
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