An arc of the horizon intercepted between the azimuth circle of a celestial object and the magnetic meridian.
·noun The quadrant of an azimuth circle. II. Azimuth ·noun An arc of the horizon intercepted betwee...
Webster's Dictionary of the English Language
A word borrowed from the Arabic. The complement of the amplitude, or an arc between the meridian of ...
The Sailor's Word-Book
·noun A <<Magnet>>. II. Magnetic ·adj ·Alt. of <<Magnetical>>. III. Magnetic ·noun Any metal, as i...
See vertical circles. ...
A superior graduated compass for ascertaining the amount of magnetic variation, by amplitude or azim...
·adj Of, Pertaining to, or produced by, magnetism which is developed by the passage of an electric c...
The angle between the east or west point of a compass and any heavenly body at its rising or setting...
An iron plate fixed near the compass, to neutralize the effect of local attraction upon the needle. ...
Applied to theodolites, ships' compasses, &c. A balanced needle, highly magnetized, which points to ...
An extraordinary magnetic action indicated by delicate magnetometers in a magnetic observatory, not ...
An instrument for communicating messages by means of magnetism. ...