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The unit of superficial measure, being a square of which each side is ten meters in length; 100 square meters, or about 119.6 square yards.

Pertaining to, or measured by, an areometer.

from internal pressure, flows spontaneously like a fountain. They are usually of small diameter and often of great depth.

a pair of magnetic needles so mounted as to be nearly or quite astatic, as in some galvanometers.

tion of a point or position in a series, or of degree, rate, or value; as, with the thermometer at 80º; goods sold at a cheap price; a country estimated at 10,000 square miles; life is short at the longest.

ain physical measurements calculations; conventionally, that pressure under which the barometer stands at 760 millimeters, at a temperature of 0º Centigrade, at the level of the sea, and in the latitude of Paris. Sir W. Thomson.

ica or other church. The name was extended in the Middle Ages to the open churchyard or cemetery.

fferent parts of the country (at Paris, 0.95 of an English ell); -- now superseded by the meter.

orizon (or other circle considered with reference to the sphere on which it lies), the diameter of the sphere which is perpendicular to the plane of the circle. Hutton. -- Axis of the Ionic capital (Arch.), a line passing perpendicularly through the middle of the eye of the volute. -- Neutral axis (Mech.), the line o…

he hearth. [U.S.] There was first a backlog, from fifteen to four and twenty inches in diameter and five feet long, imbedded in the ashes. S. G. Goodrich.

A movement in dancing. See Balance, v. i., S. Balance electrometer, a kind of balance, with a poised beam, which indicates, by weights suspended from one arm, the mutual attraction of oppositely electrified surfaces. Knight. -- Balance fish. (Zoöl) See Hammerhead. -- Balance knife, a carving or table knife the handle…

A wheel which regulates the beats or pulses of a watch or chronometer, answering to the pendulum of a clock; -- often called simply a balance.

The pressure of one dyne per square centimeter; -- used as a unit of pressure.

aining to weight, esp. to the weight or pressure of the atmosphere as measured by the barometer.

Pertaining to the barometer; made or indicated by a barometer; as, barometric changes; barometrical observations.

By means of a barometer, or according to barometric observations.

A form of barometer so constructed as to inscribe of itself upon paper a record of the variations of atmospheric pressure.

ther of the scales used by the French chemist Antoine Baumé in the graduation of his hydrometers; of or relating to Baumé's scales or hydrometers. There are two Baumé hydrometers. One, which is used with liquids heavier than water, sinks to 0º in pure water, and to 15º in a 15 per cent salt solution; the other, for liq…

globules of different specific gravities thrown into it; now ascertained by more accurate meters.

A hydrometer scale on which the zero point corresponds to sp. gr. 1.00, and the 30º-point to sp. gr. 0.85. From these points the scale is extended both ways, all the degrees being of equal length.