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ies of moths, of the family Geometridæ; -- so called because their larvæ (called loopers, measuring worms, spanworms, and inchworms) creep in a looping manner, as if measuring. Many of the species are injurious to agriculture, as the cankerworms.

A thermometer specially constructed for measuring temperetures at a depth below the surface of the ground.

A vessel filled with running sand for measuring time; an hourglass; and hence, the time in which such a vessel is exhausted of its sand. She would not live The running of one glass. Shak.

An instrument for measuring the specific gravity and ascertaining the quantity of sugar contained in must.

An instrument for measuring the number of red blood corpuscles in the blood.

ed in astronomocal observations. Its principal use was to find the altitude of the sun by measuring the length of its shadow.

An instrument for measuring angles, especially the angles of crystals, or the inclination of planes. Contact, or Hand, goniometer, a goniometer having two movable arms (ab, cd), between which (at ab) the faces of the crystals are placed. These arms turn about a fixed point, which is the center of the graduated circle o…

The art of measuring angles; trigonometry.

A graduated cup, tube, or flask; a measuring glass used by apothecaries and chemists. See under Graduated.

The chain ordinarily used in measuring land. See Chain, n., 4, and Gunter's scale.

A form of apparatus (somewhat different from the hemadrometer) for measuring the velocity of the blood.

An apparatus for measuring the amount of hemoglobin in a fluid, by comparing it with a solution of known strength and of normal color.

An instrument devised by Hermann, for regulating and measuring the thickness of a layer of blood for spectroscopic examination.

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

A measure equal to a hand's breadth, -- four inches; a palm. Chiefly used in measuring the height of horses.

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

To form or round into a heap, as in measuring; to fill (a measure) more than even full.

A name given to the old Parthenon at Athens, because measuring 100 Greek feet, probably in the width across the stylobate.

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.

The apart or practice of measuring the diameters of heavenly bodies, their relative distances, etc. See Heliometer.