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"The ring which suspends some of the articles in use in the Alipterium." — Encyclopedia Britanica, 1893

Alipterium Tools

"The ring which suspends some of the articles in use in the Alipterium." — Encyclopedia Britanica,…

"Suspend two similar spring balances, A and B, from any convenient support, as shown. From the wooden rod carried by their hooks, suspend a known weight. Be sure that the dynamometers hang vertical, and therefore parallel. Record the reading of the dynamometers." -Avery 1895

Two Spring Balances

"Suspend two similar spring balances, A and B, from any convenient support, as shown. From the wooden…

"When such a surface is irregular in shape, suspend it at any point, so that it may move freely, and when it has come to rest, drop a plumb line from the point of suspension and mark its direction on the surface. Do the same at any other point, and the centre of gravity will lie where the two line intersect." —Quackenbos 1859

Center of Gravity

"When such a surface is irregular in shape, suspend it at any point, so that it may move freely, and…

A hand holding a pointed weight suspended from a string.

Hand holding weight

A hand holding a pointed weight suspended from a string.

"Raise and hold the forearm steadily in a horizontal position in front of the forehead, palm of the hand to the front." — Moss, 1914

Suspend Firing

"Raise and hold the forearm steadily in a horizontal position in front of the forehead, palm of the…