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of some tough stone, esp. granite, used as a material for street pavements. Its usual diameter is 5 to 7 inches.

involving the use of two threads; as, bifilar suspension; a bifilar balance. Bifilar micrometer (often called a bifilar), an instrument form measuring minute distances or angles by means of two very minute threads (usually spider lines), one of which, at least, is movable; -- more commonly called a filar micrometer.…

Of or pertaining to the diameter of the cranium, from one parietal fossa to the other.

l faces so as to form a cube; -- called also optical cube. It is used in one form of photometer.

nd for the same liquid under different pressures. For water, at the level of the sea, barometer 30 in., it is 212 º Fahrenheit; for alcohol, 172.96º; for ether, 94.8º; for mercury, about 675º. The boiling point of water is lowered one degree Fahrenheit for about 550 feet of ascent above the level of the sea. -- Boilin…

The size of a hole; the interior diameter of a tube or gun barrel; the caliber.

. the South Sea islands. It is of a roundish form, from four to six or seven inches in diameter, and, when baked, somewhat resembles bread, and is eaten as food, whence the name.

An instrument for making such tracings, as a recording brontometer.

small green heads, or "sprouts," each a cabbage in miniature, of one or two inches in diameter; the thousand-headed cabbage. -- Brussels wire ground, a ground for lace, made of silk, with meshes partly straight and partly arched.

An expansion or protuberance on a stem or tube, as the bulb of a thermometer, which may be of any form, as spherical, cylindrical, curved, etc. Tomlinson.

The diameter of the bore, as a cannon or other firearm, or of any tube; or the weight or size of the projectile which a firearm will carry; as, an 8 inch gun, a 12-pounder, a 44 caliber. The caliber of empty tubes. Reid. A battery composed of three guns of small caliber. Prescott.

To ascertain the caliber of, as of a thermometer tube; also, more generally, to determine or rectify the graduation of, as of the various standards or graduated instruments.

The process of estimating the caliber a tube, as of a thermometer tube, in order to graduate it to a scale of degrees; also, more generally, the determination of the true value of the spaces in any graduated instrument.

usually resembling a pair of dividers or compasses with curved legs, for measuring the diameter or thickness of bodies, as of work shaped in a lathe or planer, timber, masts, shot, etc.; or the bore of firearms, tubes, etc.; -- called also caliper compasses, or caliber compasses. Caliper square, a draughtsman's or mech…

Of or pertaining to process of using the calorimeter. Satisfactory calorimetric results. Nichol.

The Celsius thermometer or scale, so called from Anders Celsius, a Swedish astronomer, who invented it. It is the same as the centigrade thermometer or scale.

A measure of area, the hundredth part of an are; one square meter, or about 1

o a hundred divisions or equal parts. Spesifically: of or pertaining the centigrade thermometer; as, 10° centigrade (or 10° C.). Centigrade thermometer, a thermometer having the zero or 0 at the point indicating the freezing state of water, and the distance between that and the point indicating the boiling state of wat…

An abbreviation for Centimeter, Gram, Second. -- applied to a system of units much empoyed in physical science, based upon the centimeter as the unit of length, the gram as the unit of weight or mass, and the second as the unit of time.

part of the bore of a piece of ordnance which holds the charge, esp. when of different diameter from the rest of the bore; -- formerly, in guns, made smaller than the bore, but now larger, esp. in breech-loading guns.