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ns of large astronomical and geodetical instruments. -- Micrometer screw, a screw with a graduated head used in some forms of micrometers. -- Position micrometer. See under Position. -- Scale, or Linear, micrometer, a minute and very delicately graduated scale of equal parts used in the field of a telescope or micro…

g stretched between two bridges, one or both of which are movable, and which stand upon a graduated rule for the purpose of readily changing and measuring the length of the part of the string between them.

sembling a wall; perpendicular or steep; as, a mural precipice. Mural circle (Astron.), a graduated circle, in the plane of the meridian, attached permanently to a perpendicular wall; -- used for measuring arcs of the meridian. See Circle, n., 3. -- Mural crown (Rom. Antiq.), a golden crown, or circle of gold indented…

ural mineral waters of that place, which are charged with carbonic acid, and the use of a graduated course of rest, physical exercises, massage, etc.; hence, any similar treatment using waters artificially charged with the essential ingredients of the natural mineral waters of Bad Nauheim. Hence, Nauheim bath, etc.…

A collection of boxes, cases, or the like, of graduated size, each put within the one next larger.

iaxial crystal has one such line, a biaxial crystal has two. -- Optical circle (Opt.), a graduated circle used for the measurement of angles in optical experiments. -- Optical square, a surveyor's instrument with reflectors for laying off right angles.

t does to the extent of nearly a thousand volumes, forming the alloy Pd2H. It is used for graduated circles and verniers, for plating certain silver goods, and somewhat in dentistry. It was so named in 1804 by Wollaston from the asteroid Pallas, which was discovered in 1802. Symbol Pd. Atomic weight, 106.2.…

ipes, a primitive wind instrument, consisting of a series of short hollow reeds or pipes, graduated in length by the musical scale, and fastened together side by side; a syrinx; a mouth organ; -- said to have been invented by Pan. Called also Pan's pipes and Panpipes.

Any one of numerous species of small parrots having a graduated tail, which is frequently very long; -- called also paroquet and paraquet.

al instrument somewhat resembling the harpsichord, and consisting of a sreies of wires of graduated length, thickness, and tension, struck by hammers moved by keys. Dumb piano. See Digitorium. -- Grand piano. See under Grand. -- Square piano, one with a horizontal frame and an oblong case. -- Upright piano, one with…

A small glass tube, often with an enlargement or bulb in the middle, and usually graduated, -- used for transferring or delivering measured quantities.

paradise birds, and mostly native of New Guinea. They have a long curved beak and a long graduated tail.

different specific uses in astronomy, surveying, gunnery, etc., consisting commonly of a graduated arc of 90º, with an index or vernier, and either plain or telescopic sights, and usually having a plumb line or spirit level for fixing the vertical or horizontal direction. Gunner's quadrant, an instrument consisting of…

An observation read from the scale of a graduated instrument; as, the reading of a barometer. Reading of a bill (Legislation), its normal recital, by the proper officer, before the House which is to consider it.

An instrument with two arms that are pivoted together at one end, and a graduated arc, -- used by military engineers for measuring and laying off angles of fortifications.

refraction. See under Index. -- Refraction circle (Opt.), an instrument provided with a graduated circle for the measurement of refraction. -- Refraction of latitude, longitude, declination, right ascension, etc., the change in the apparent latitude, longitude, etc., of a heavenly body, due to the effect of atmosphe…

everal times in succession, and different, but successive and contiguous, portions of the graduated limb, before reading off the aggregate result, which aggregate, divided by the number of measurements, gives the angle, freed in a measure from errors of eccentricity and graduation. -- Repeating watch. See Repeater (a)…

with a hole at one side through which a solar ray entering indicated the altitude on the graduated inner surface opposite.

A measuring instrument consisting of a graduated bar of wood, ivory, metal, or the like, which is usually marked so as to show inches and fractions of an inch, and jointed so that it may be folded compactly. A judicious artist will use his eye, but he will trust only to his rule. South.

Hence, anything graduated, especially when employed as a measure or rule, or marked by lines at regular intervals. Specifically: