Journal - Franklin Institute of the State of Pennsylvania (1826)
Franklin Institute, Philadelphia, Franklin Institute (Philadelphia, Pa.) · [Philadelphia : Franklin Institute] · leaf 362
of free vibration: but at high frequencies,with short vibrating segments, the distance may be reduced to 0.5mm., or less. The lower brass bevel edge B has a simple sliding motion on thevertical bar, with a clamp screw to hold it in place. The upperbrass edge A has. in addition to a clamp screw, a… … Section EF. D Scale 0/234 CentimetersDetails of the upper bevel edge. millimeter at this vernier pinion screw. For convenience of readingthe millimeter scale, the vertical rod has an arbitrary zero at a pointabout 20 cm. above the base. From this zero, the scale numbers 354 -^- E. Kexnelly and Ch.…
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