Water Tenfold the Volume of Lead; a Geared Counterweight Device
A note on relative density above a large drawn mechanism of toothed wheel and lantern pinion
Three lines of text at the top state that water fills a vessel ten times larger than the same weight of lead, given vessels of equal shape. A tiny diagram of two nested squares carries the figure 10 to illustrate the ratio. Dominating the lower two-thirds of the leaf is a carefully drawn mechanism in which a large toothed wheel meshes with a lantern pinion on a horizontal drum shaft, with a weight hung to drive or load it.
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Water occupies ten times the volume of lead
For equal weights in vessels of the same shape, a pound of lead fills a vessel ten times smaller than a pound of water. Put the other way, the bulk of the water is tenfold that of the lead. A small two-square figure labelled 10 fixes the ratio.
Toothed wheel driving a lantern pinion on a drum
A large spoked toothed wheel meshes with a lantern (spindle) pinion mounted on a horizontal drum shaft carried between two uprights. A weight hangs from the assembly. The gearing converts between the drum's rotation and the driving wheel.