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he measurement of magnetic forces; obtained by means of a magnetometer; as, magnetometric instruments; magnetometric measurements.

An instrument resembling the guillotine, formerly used in Scotland for beheading criminals. Wharton.

An instrument closely resembling the mandolin, but of larger size and tuned lower.

A small and beautifully shaped instrument resembling the lute.

hands in dexterous operations; to do hand work; specifically, to manage the apparatus or instruments used in scientific work, or in artistic or mechanical processes; also, specifically, to use the hand in mesmeric operations.

An instrument for measuring the tension or elastic force of gases, steam, etc., constructed usually on the principle of allowing the gas to exert its elastic force in raising a column of mercury in an open tube, or in compressing a portion of air or other gas in a closed tube with mercury or other liquid intervening, o…

A Chilian shrub (Aristotelia Maqui). Its bark furnishes strings for musical instruments, and a medicinal wine is made from its berries.

, in which Hertzian waves are used in transmission and a coherer is used as the receiving instrument.

That in a complex system which constitutes the materials, or instruments employed, in distinction from the personnel, or men; as, the baggage, munitions, provisions, etc., of an army; or the buildings, libraries, and apparatus of a college, in distinction from its officers.

ematics; hence, theoretically precise; accurate; as, mathematical geography; mathematical instruments; mathematical exactness. -- Math`e*mat"ic*al*ly, adv.

ing to an object desired; intermediate agency or measure; necessary condition or coagent; instrument. Their virtuous conversation was a mean to work the conversion of the heathen to Christ. Hooker. You may be able, by this mean, to review your own scientific acquirements. Coleridge. Philosophical doubt is not an end, b…

An instrument by means of which size or quantity is measured, as a graduated line, rod, vessel, or the like. False ells and measures be brought all clean adown. R. of Gloucester.

An instrument for cutting into the urethra so as to enlarge its orifice.

tc., into any kind of structure, machine, or other object, requiring the use of tools, or instruments. An art quite lost with our mechanics. Sir T. Browne.

pplied to the inverstigation of physical phenomena. -- Mechanical powers, certain simple instruments, such as the lever and its modifications (the wheel and axle and the pulley), the inclined plane with its modifications (the screw and the wedge), which convert a small force acting throught a great space into a great…

Acting by means, or by an intervening cause or instrument; not direct or immediate; acting or suffering through an intervening agent or condition.

ng; action or relation of anything interposed; action as a necessary condition, means, or instrument; interposition; intervention. The soul [acts] by the mediation of these passions. South.

An instrument for determining longitude by observation of the stars.

An instrument containing a combination of colored glasses such that they transmit only red light, so that objects of other colors, as green leaves, appear black when seen through it. It is used for viewing colored flames, to detect the presence of potassium, lithium, etc., by the red light which they emit.…

ivance for preserving a record of music, by recording the action of the keys of a musical instrument when played upon.