Mass
The amount of matter a body contains. It must not be confounded with weight, for the mass of a body remains the same, no matter in what part of the world it may be, but its weight would vary in different latitudes.
How to true a balance, repair a chipped dial, temper a spring or test a stone — the working bench-book of the American watch trade, arranged A to Z.
The amount of matter a body contains. It must not be confounded with weight, for the mass of a body remains the same, no matter in what part of the world it may be, but its weight would vary in different latitudes.