Mechanical laboratory methods; a testing of instruments and machines in the mechanical engineering laboratory and in practice (1918)
Smallwood, Julian Chase · New York, D. Van Nostrand company · leaf 110
motion of a point on the wheelcircumference with relation to its axis w^ill be due only .to circum-ferential motion of the tracing point. Radial motion of the 16 PLANIMETERS 80 tracing point will cause no motion of the wheel on its axis. Thusit is seen that it is only the circumferential component… … Bc7se Circle Fig. 54.—Radial Planimeter. To deduce the equation of the instrument, let iJ = average distance of tracing point to pivot center = average radius of curve, inches;r = distance between tracing point and plane of wheel, inches;ro = distance between center of chart and zero of circular…
Mechanical engineering laboratories
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