LEVEL n.
irit level in which a glass-covered box is used instead of a tube. -- Garpenter's level, Mason's level, either the plumb level or a straight bar of wood, in which is imbedded a small spirit level. -- Level of the sea, the imaginary level from which heights and depths are calculated, taken at a mean distance between h…
LOCK n.
. -- Lock rail (Arch.), in ordinary paneled doors, the rail nearest the lock. Lock rand (Masonry), a range of bond stone. Knight. -- Mortise lock, a door lock inserted in a mortise. -- Rim lock, a lock fastened to the face of a door, thus differing from a mortise lock.
MARGIN n.
as in the speculative buying and selling of stocks, wheat, etc. N. Biddle. Margin draft (Masonry), a smooth cut margin on the face of hammer-dressed ashlar, adjacent to the joints. -- Margin of a course (Arch.), that part of a course, as of slates or shingles, which is not covered by the course immediately above it.…
MASTER n.
A person holding an office of authority among the Freemasons, esp. the presiding officer; also, a person holding a similar office in other civic societies. Little masters, certain German engravers of the 16th century, so called from the extreme smallness of their prints. -- Master in chancery, an officer of courts of…
MOLE n.
A mound or massive work formed of masonry or large stones, etc., laid in the sea, often extended either in a right line or an arc of a circle before a port which it serves to defend from the violence of the waves, thus protecting ships in a harbor; also, sometimes, the harbor itself. Brande & C.
MORTAR n.
cement, or plaster of Paris, with sand, water, and sometimes other materials; -- used in masonry for joining stones, bricks, etc., also for plastering, and in other ways. Mortar bed, a shallow box or receptacle in which mortar is mixed. -- Mortar board. (a) A small square board with a handle beneath, for holding mort…