LEVEL n.
re calculated, taken at a mean distance between high and low water. -- Line of levels, a connected series of measurements, by means of a level, along a given line, as of a railroad, to ascertain the profile of the ground. -- Plumb level, one in which a horizontal bar is placed in true position by means of a plumb lin…
LEVER n.
nt. -- Lever jack. See Jack, n., 5. -- Lever watch, a watch having a vibrating lever to connect the action of the escape wheel with that of the balance. Universal lever, a machine formed by a combination of a lever with the wheel and axle, in such a manner as to convert the reciprocating motion of the lever into a co…
LIGHTNING n.
. -- Lightning rod, a metallic rod set up on a building, or on the mast of a vessel, and connected with the earth or water below, for the purpose of protecting the building or vessel from lightning. -- Sheet lightning, a diffused glow of electric light flashing out from the clouds, and illumining their outlines. The…