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An instrument for measuring time by the running of sand. See Hourglass.

ory, or metal, with one or more sets of spaces graduated and numbered on its surface, for measuring or laying off distances, etc., as in drawing, plotting, and the like. See Gunter's scale.

nomical instrument, the limb of which embraces a small portion only of a circle, used for measuring differences of declination too great for the compass of a micrometer. When it is used for measuring zenith distances of stars, it is called a zenith sector. Dip sector, an instrument used for measuring the dip of the hor…

An instrument for measuring the direction, duration, and force of earthquakes and like concussions.

The half of a given, or measuring, angle.

An instrument for measuring angles.

Measuring or containing a foot and a half; as, a sesquipedalian pygmy; -- sometimes humorously applied to long words.

An instrument for measuring angular distances between objects, -- used esp. at sea, for ascertaining the latitude and longitude. It is constructed on the same optical principle as Hadley's quadrant, but usually of metal, with a nicer graduation, telescopic sight, and its arc the sixth, and sometimes the third, part of…

the coamings and ledges round the hatchways of a ship. -- Shot gauge, an instrument for measuring the diameter of round shot. Totten. -- shot hole, a hole made by a shot or bullet discharged. -- Shot locker (Naut.), a strongly framed compartment in the hold of a vessel, for containing shot. -- Shot of a cable (Nau…

Measuring by the apparent motion of the stars; designated, marked out, or accompanied, by a return to the same position in respect to the stars; as, the sidereal revolution of a planet; a sidereal day. Sidereal clock, day, month, year. See under Clock, Day, etc. -- Sideral time, time as reckoned by sideral days, or, t…

pearls. Knight. Size roll, a small piese of parchment added to a roll. -- Size stick, a measuring stick used by shoemakers for ascertaining the size of the foot.

The larva of any geometrid moth, as the cankeworm; a geometer; a measuring worm.

Art or process of using the spectrometer, or of measuring wave lengths of rays of a spectrum. -- Spec`tro*met"ric (#), a.

An instrument for measuring or comparing the intensites of the colors of the spectrum.

An instrument for measuring the curvature of spherical surface, as of lenses for telescope, etc.

An instrument for measuring the strength of the pulse beat; a sphygmograph.

the species grow to great size, as the great Japanese spider crab (Macrocheira Kempferi), measuring sometimes more than fifteen feet across the legs when they are extended. -- Spider fly (Zoöl.), any one of numerous species of parasitic dipterous insects of the family Hippoboscidæ. They are mostly destitute of wings,…

An instrument for measuring the vital capacity of the lungs, or the volume of air which can be expelled from the chest after the deepest possible inspiration. Cf. Pneumatometer.

The act or process of measuring the chest capacity by means of a spirometer.

al purposes, as receiving and imparting power, diminishing concussion, regulating motion, measuring weight or other force.