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Roberval’s balance click to hear : Roberval’s balance

Commonly used scale that operates on the same principle as the beam balance; the pans are stabilized by a shank and rest on the beam.
Roberval’s balance image
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See Roberval’s balance in : french | spanish
base pan beam weight pointer dial

base click to hear : base

Support that provides stability to the scale.

pan click to hear : pan

Flat rigid support that holds either the body to be weighed or the weights.

beam click to hear : beam

Horizontal metal bar that balances on a vertical axis and supports a pan on each end.

weight click to hear : weight

Piece of metal, such as copper or iron, of known mass that is placed on a pan to balance the scale and thereby assess the corresponding mass of a body.

pointer click to hear : pointer

Metal needle that indicates the point of equilibrium on the dial when the beam is level.

dial click to hear : dial

Graduated surface with a pointer in front that indicates the point of equilibrium for the two pans.