HOOP n.
the middle of a cask, that nearest the end, and the intermediate hoop between these two, respectively. -- Flat hoop, a wooden hoop dressed flat on both sides. -- Half-round hoop, a wooden hoop left rounding and undressed on the outside. -- Hoop iron, iron in thin narrow strips, used for making hoops. -- Hoop lock,…
ISOMETRIC; ISOMETRICAL a.
is used. It is so named from the fact that the projections of three equal lines, parallel respectively to three rectangular axes, are equal to one another. This kind of projection is principally used in delineating buildings or machinery, in which the principal lines are parallel to three rectangular axes, and the prin…
MATE n.
ng next below the captain. If there are more than one bearing the title, they are called, respectively, first mate, second mate, third mate, etc. In the navy, a subordinate officer or assistant; as, master's mate; surgeon's mate.
PROOF a.
a temperature of 51º Fahrenheit weigh exactly the second, third, and fourth proof spirits respectively. -- Proof staff, a straight-edge used by millers to test the flatness of a stone. -- Proof stick (Sugar Manuf.), a rod in the side of a vacuum pan, for testing the consistency of the sirup. -- Proof text, a passage…
QUADRANT n.
horizon glass, are fixed one upon the index arm and the other upon one side of the frame, respectively. When the instrument is held upright, the index arm may be swung so that the index glass will reflect an image of the sun upon the horizon glass, and when the reflected image of the sun coincides, to the observer's ey…