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An instrument for measuring the forms and angles of salts and crystals; a goniometer.

An instrument for measuring the harmonic relations of sounds. It is often a monochord furnished with movable bridges.

A measure of length, equal to a hundred meters. It is equivalent to 328.09 feet.

Same as Hectare, Hectogram, Hectoliter, and Hectometer.

An instrument devised originally for measuring the diameter of the sun; now employed for delicate measurements of the distance and relative direction of two stars too far apart to be easily measured in the field of view of an ordinary telescope.

An instrument for measuring the velocity with which the blood moves in the arteries.

asured by the height to which it will raise a column of mercury; -- called also a hæmomanometer.

Same as Hæmatachometer.

A form of hemoglobinometer.

Same as Hæmochromometer.

species of verse are composed the Iliad of Homer and the Æneid of Virgil. In English hexameters accent takes the place of quantity. Leaped like the | roe when he | hears in the | woodland the | voice of the | huntsman. Longfellow. Strongly it | bears us a- | long on | swelling and | limitless | billows, Nothing be- |…

See Odometer.

An instrument for making of angular measurements.

An instrument for measuring time.

An instrument for determining the depth of the sea water by its pressure.

An instrument to measure the velocity of a liquid current by the force of its impact.

etc., and called by various specific names according to its construction or use, as tachometer, rheometer, hydrometer, pendulum, etc.; a current gauge.

An instrument for measuring the degree of moisture of the atmosphere. Daniell's hygrometer, a form of hygrometer consisting of a bent glass tube terminating in two bulbs, the one covered with muslin, the other of black glass, and containing ether and a thermometer. Ether being poured on the muslin, the black ball, cool…

anything exceeding the ordinary standard. When a man rises beyond six foot, he is an hypermeter. Addison.

ter. It consists of a vessel for water, with a lamp for heating it, and an inclosed thermometer for showing the temperature of ebullition.