compass : Idioms & Phrases


Azimuth compass

  • a compass resembling the mariner's compass, but having the card divided into degrees instead of rhumbs, and having vertical sights; used for taking the magnetic azimuth of a heavenly body, in order to find, by comparison with the true azimuth, the variation of the needle.
Webster 1913

Beam compass

  • an instrument consisting of a rod or beam, having sliding sockets that carry steel or pencil points; used for drawing or describing large circles.
Webster 1913

Bow compasses

  • . See Bow-compass.
Webster 1913

bow-compass

Bow"-com`pass noun
Wordforms
plural Bow-compasses
Definitions
  1. An arcograph.
  2. A small pair of compasses, one leg of which carries a pencil, or a pen, for drawing circles. Its legs are often connected by a bow-shaped spring, instead of by a joint.
  3. A pair of compasses, with a bow or arched plate riveted to one of the legs, and passing through the other.
Webster 1913

Caliber compasses

  • . See Calipers.
Webster 1913

Caliber compasses, Caliper compasses

  • . See Calipers.
Webster 1913

cardinal compass point

  • noun one of the four main compass points
WordNet

Compass card

  • noun compass in the form of a card that rotates so that 0 degrees or North points to magnetic north
    compass card.
WordNet
  • the eircular card attached to the needles of a mariner's compass, on which are marked the thirty-two points or rhumbs.
Webster 1913

Compass dial

  • a small pocket compass fitted with a sundial to tell the hour of the day.
Webster 1913

compass flower

  • noun any of several plants having leaves so arranged on the axis as to indicate the cardinal points of the compass
    compass flower.
WordNet

compass north

  • noun the direction in which a compass needle points
    magnetic north; north.
WordNet

Compass plane

  • noun a plane with a flexible face that can plane concave or convex surfaces
    circular plane.
WordNet
  • (Carp.), a plane, convex in the direction of its length on the under side, for smoothing the concave faces of curved woodwork.
Webster 1913

compass plant

  • noun North American annual with red or rose-colored flowers
    Lotus americanus; prairie lotus; prairie bird's-foot trefoil; prairie trefoil.
  • noun any of several plants having leaves so arranged on the axis as to indicate the cardinal points of the compass
    compass flower.
WordNet

Compass plant, Compass flower

  • (Bot.), a plant of the American prairies (Silphium laciniatum), not unlike a small sunflower; rosinweed. Its lower and root leaves are vertical, and on the prairies are disposed to present their edges north and south.
    Its leaves are turned to the north as true as the magnet: This is the compass flower. Longefellow.
Webster 1913

compass point

  • noun any of 32 horizontal directions indicated on the card of a compass
    point.
    • he checked the point on his compass
WordNet

Compass saw

  • noun a handsaw with a narrow triangular blade for cutting curves
WordNet
  • a saw with a narrow blade, which will cut in a curve; called also fret saw and keyhole saw.
Webster 1913

Compass timber

  • (Shipbuilding), curved or crooked timber.
Webster 1913

Compass window

  • (Arch.), a circular bay window or oriel window. It has two or more magnetic needles permanently attached to a card, which moves freely upon a pivot, and is read with reference to a mark on the box representing the ship's head. The card is divided into thirty-two points, called also rhumbs, and the glass-covered box or bowl containing it is suspended in gimbals within the binnacle, in order to preserve its horizontal position.
Webster 1913

Declination compass

  • (Physics), a compass arranged for finding the declination of the magnetic needle.
Webster 1913

Declination of the compassneedle

  • the horizontal angle which the magnetic needle makes with the true north-and-south line.
Webster 1913

Deviation of the compass

  • the angle which the needle of a ship's compass makes with the magnetic meridian by reason of the magnetism of the iron parts of the ship.
Webster 1913

Elliptic compasses

  • an instrument arranged for drawing ellipses.
Webster 1913

Hair compass, Hair divider

  • a compass or divider capable of delicate adjustment by means of a screw.
Webster 1913

Hanging compass

  • a compass suspended so that the card may be read from beneath.
Webster 1913

Inclination compass

  • an inclinometer.
Webster 1913

magnetic compass

  • noun compass based on an indicator (as a magnetic needle) that points to the magnetic north
WordNet

Mariner's compass

  • noun compass in the form of a card that rotates so that 0 degrees or North points to magnetic north
    compass card.
WordNet
  • . See under Compass.
Webster 1913

Points of the compass

  • (Naut.), the thirty-two points of division of the compass card in the mariner's compass; the corresponding points by which the circle of the horizon is supposed to be divided, of which the four marking the directions of east, west, north, and south, are called cardinal points, and the rest are named from their respective directions, as N. by E., N. N. E., N. E. by N., N. E., etc. See Illust. under Compass.
Webster 1913

Prismatic compass

  • (Surv.), a compass having a prism for viewing a distant object and the compass card at the same time.
Webster 1913

Proportional, Triangular, etc., compasses

  • . See under Proportional, etc.
Webster 1913

Proportional scales, compasses, dividers, etc.

  • (Draughting), instruments used in making copies of drawings, or drawings of objects, on an enlarged or reduced scale.
Webster 1913

radio compass

  • noun a direction finder that gives a bearing by determining the direction of incoming radio signals
WordNet

sea compass

Sea" com"pass
Definitions
  1. The mariner's compass. See under Compass.
Webster 1913

Surveyor's compass

  • . See Circumferentor.
  • an instrument used in surveying for measuring horizontal angles. See Circumferentor.
Webster 1913

To box the compass

  • (Naut.), to name the thirty-two points of the compass in their order.
Webster 1913

To fetch a compass

  • (Naut.), to make a sircuit; to take a circuitious route going to a place.
  • to make a circuit.
Webster 1913

To set by the compass

  • to observe and note the bearing or situation of by the compass.
Webster 1913

Transit compass

  • . See Transit, 5, above.
Webster 1913

Triangular compasses

  • compasses with three legs for taking off the angular points of a triangle, or any three points at the same time.
Webster 1913

Variation compass

  • a compass of delicate construction, used in observations on the variations of the needle.
Webster 1913

Vernier compass

  • a surveyor's compass with a vernier for the accurate adjustment of the zero point in accordance with magnetic variation.
Webster 1913