What is compass?


A compass is a navigational instrument that measures directions in a frame of reference that is stationary relative to the surface of the earth. The frame of reference defines the four cardinal directions (or points) – north, south, east, and west. Intermediate directions are also defined. Usually, a diagram called a compass rose, which shows the directions (with their names usually abbreviated to initials), is marked on the compass. When the compass is in use, the rose is aligned with the real directions in the frame of reference, so, for example, the "N" mark on the rose really points to the north. Frequently, in addition to the rose or sometimes instead of it, angle markings in degrees are shown on the compass. North corresponds to zero degrees, and the angles increase clockwise, so east is 90 degrees, south is 180, and west is 270. These numbers allow the compass to show azimuths or bearings, which are commonly stated in this notation.

Read more about Compass.

Some articles on compass:

Saxtuba - Compass
... In the following table, all eight saxtubas from Le Juif errant and the contrabass saxtuba in C from Massenet's Esclarmonde have been included with their probable ranges ... I have followed Forsyth (1914) Name Key Fundamental Transposition Sounding Range Sopranino B♭ minor seventh higher Soprano E♭ minor third higher Alto B♭ major second lower Tenor E♭ major sixth lower Baritone B♭ major ninth lower Bass B♭ major ninth lower Bass E♭ major thirteenth lower Contrabass C two octaves lower Contrabass B♭ octave plus a major ninth lower ...
Little Chef - History - 2000–2007
... In 2000 Granada merged with the Compass Group to form Granada Compass, but the two demerged in 2001 leaving Little Chef as part of Compass ... Chefs began serving Harry Ramsden's meals, a cross-branding exercise by Compass who also owned Harry Ramsden's, though this ended in June 2004 ... The private equity business Permira bought Travelodge and Little Chef from Compass Group in December 2002 for £712 million, forming a special purpose vehicle called TLLC Group Holdings ...
Anachronisms In The Book Of Mormon - Technology Anachronisms - Compass
... The Book of Mormon also states that a "compass" or "Liahona" was used by Nephi around 600 BC ... The compass is widely recognized to have been invented in China around 1100 AD, and remains of a compass have never been found in America ... it Liahona, which is, being interpreted, a compass" (Alma 3738) ...
Using A Compass
... A magnetic compass points to magnetic north pole, which is approximately 1,000 miles from the true geographic North Pole ... A magnetic compass's user can determine true North by finding the magnetic north and then correcting for variation and deviation ... Deviation refers to the response of the compass to local magnetic fields caused by the presence of iron and electric currents one can partly ...

More definitions of "compass":

  • (noun): Drafting instrument used for drawing circles.
  • (verb): Travel around, either by plane or ship.
    Synonyms: circumnavigate
  • (verb): Bring about; accomplish.
    Example: "This writer attempts more than his talents can compass"
  • (noun): The limit of capability.
    Example: "Within the compass of education"
    Synonyms: range, reach, grasp
  • (noun): Navigational instrument for finding directions.

Famous quotes containing the word compass:

    be a while our guests:
    For stars, gaze on our eyes.
    The compass love shall hourly sing,
    And as he goes about the ring,
    We will not miss
    To tell each point he nameth with a kiss.
    William Browne (1591–1643)

    loosely bound
    By countless silken ties of love and thought
    To everything on earth the compass round,
    Robert Frost (1874–1963)

    Prithee don’t screw your wit beyond the compass of good manners.
    Colley Cibber (1671–1757)