Mechanics is defined as "the study of forces on bodies, and of the motions they produce" (Chambers 1988,560). Pike (1856,I,174) gives a fuller definition: "Mechanical experiments are of two kinds; the one relating to the quiescence of bodies, and the other to their motion. Among the former are included those which demonstrate, or rather make evident to the senses, the equilibrium of the mechanical powers, and the corresponding proportions of the weights sustained, to the forces which sustain them, the properties of the centre of gravity, the composition and resolution of forces, &c. By the latter, or those on motion, are shown the laws of collision, of acceleration, and the varous effects of forces which communicate motion to bodies." Related to scientific instruments, the heading would normally include items of demonstration apparatus to show how, for example, pulleys and levers work. The term as used in this Catalogue, however, also includes tools and devices which might be used in a workshop, and some items in the collection which are related to force and gravity, but which do not well fit into other categories. It is a bit of a mixed bag!

The mechanical instruments in the Museum are divided into two categories:

	Balances
	Other Mechanical Instruments

Balances