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An instrument for measuring temperature, founded on the principle that changes of temperature in bodies are accompained by proportional changes in their volumes or dimensions.

Measuring in the third dimension other than length and breadth, or in general dimension other than length; -- said of a solid body; as, a timber seven inches thick. Were it as thick as is a branched oak. Chaucer. My little finger shall be thicker than my father's loins. 1 Kings xii. 10.

Measuring thirty inches by twenty-five; -- said of portraitures. Three-quarter length, a portrait showing the figure to the hips only.

An instrument or apparatus for measuring or detecting tithonicity; an actinometer. [R.]

er it. -- Toll corn, corn taken as pay for grinding at a mill. -- Toll dish, a dish for measuring toll in mills. -- Toll gatherer, a man who takes, or gathers, toll. -- Toll hop, a toll dish. [Obs.] Crabb. -- Toll thorough (Eng. Law), toll taken by a town for beasts driven through it, or over a bridge or ferry mai…

An instrument for measuring tension, esp. that of the eyeball.

The act of measuring with a tonometer; specifically (Med.), measurement of tension, esp. the tension of the eyeball.

A torsion balance used for measuring electric attraction or repulsion.

shaft, and hence the horse power of an engine, esp. of a marine engine of high power, by measuring the amount of twist of a given length of the shaft. Called also torsimeter, torsiometer, torsometer.

a country, or any portion of it, is divided in a trigonometrical survey; the operation of measuring the elements necessary to determine the triangles into which the country to be surveyed is supposed to be divided, and thus to fix the positions and distances of the several points connected by them.

Measuring two feet; two feet long, thick, or wide; as, a two- foot rule.

d at its center of gravity by a long thread, constituting a delicate means for accurately measuring magnetic intensities, also for determining declinations of the magnetic needle.

An instrument for measuring the volume or the tension of any vapor; specifically, an instrument of this sort used as an alcoholometer in testing spirituous liquors.

An apparatus for measuring speed, as of machinery or vessels, but especially of projectiles.

yptus. -- Vertical limb, a graduated arc attached to an instrument, as a theodolite, for measuring vertical angles. -- Vertical line. (a) (Dialing) A line perpendicular to the horizon.

An instrument for determining the strength or purity of wine by measuring its density.

An instrument for measuring the degree of viscosity of liquids, as solutions of gum.

An instrument for measuring the voltaic electricity passing through it, by its effect in decomposing water or some other chemical compound acting as an electrolyte.

An instrument for measuring in volts the differences of potential between different points of an electrical circuit.

An instrument for measuring the volume of a body, especially a solid, by means of the difference in tension caused by its presence and absence in a confined portion of air.