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An instrument for exhibiting and measuring wave motion; specif. (Elec.),

An instrument for measuring the declination of the magnetic needle.

An instrument for measuring angles, in surveying, etc. It resembles

The art of constructing dials; the science which treats of measuring time by dials. [Written also dialling.]

An instrument for measuring the transparency of the air.

An instrument for measuring the dilatation or expansion of a substance, especially of a fluid.

Cloth, or woolen stuffs in general. People who ought to be weighing out grocery or measuring out drapery. Macaulay.

An instrument for measuring the quantity of dew on the surface of a body in the open air. It consists of a balance, having a plate at one end to receive the dew, and at the other a weight protected from the deposit of dew.

An instrument for measuring the degree of hardness; especially, an instrument for testing the relative hardness of steel rails and the like.

An instrument for measuring the intensity of the photogenic (light-producing) rays, and computing the power of object glasses.

consisting usually of a doubleimage micrometer applied to the eye end of a telescope for measuring accurately the diameter of the image of the object glass there formed; which measurement, compared with the actual diameter of the glass, gives the magnifying power.

An apparatus for measuring force or power; especially, muscular effort of men or animals, or the power developed by a motor, or that required to operate machinery.

The art or process of measuring forces doing work.

A graduated scale for measuring the duration of sounds, and determining their different, and the relation of their intervals. J. J. Rousseau.

The art of measuring the duration of sounds or echoes.

An instrument for measuring the degree of rarefaction of air contained in the receiver of an air pump. [Spelt also elaterometer.]

The art or science of measuring the force or velocity of projectiles by means of electricity.

An instrument for measuring the strength of electro-dynamic currents.

An instrument for measuring the quantity or intensity of electricity; also, sometimes, and less properly, applied to an instrument which indicates the presence of electricity (usually called an electroscope). Balance electrometer. See under Balance.

-- Elephant paper, paper of large size, 23 × 28 inches. -- Double elephant paper, paper measuring 26Paper. -- Elephant seal (Zoöl.), an African jumping shrew (Macroscelides typicus), having a long nose like a proboscis. -- Elephant's ear (Bot.), a name given to certain species of the genus Begonia, which have immen…