Wright, Mark R., 1854- · London : Longmans · leaf 246
bler. , If possible obtain a whirling-table (fig. 240) ; the action is more undercontrol. An old foot or hand sewing-machine, with the body removed,when adapted to receive the wheels, would suit admirably. ((/) Sonometer, Monochord.-^Ko. inch deal board, 3 feet long, 9 incheswide; two pieces of… … Fig. 239.
Physics
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