@article{558850,
      note = {Reproduction of original from British Library.},
      author = {Adams, George,},
      url = {http://library.usi.edu/record/558850},
      title = {The description and use of a new sea quadrant, for Taking  the Altitude of the Sun from the visible Horizon; Which is  so contrived, That the Observer will be liable to no  Interruption, or Inaccuracy from the Ship's Motion. And The  Latitude at Sea, May be obtained with greater Certainty,  and more frequently than by any Instrument of the like Kind  hitherto made publick. Invented, Made, and Sold by George  Adams, Mathematical Instrument Maker to His Majesty's  Office of Ordnance, at Tycho Brahe's Head, the Corner of  Racquet Court, in Fleetstreet, London. To which is added,  The Description and Use of two Curious Methods for  procuring an Artificial Horizon at Sea, To be used with  Hadley's Quadrant; one by means of a Whirling Speculum; the  other by a Floating Mirrour. [electronic resource] :},
      publisher = {printed by John Hart,},
      recid = {558850},
      pages = {40p.,plate ;},
      address = {London :},
      year = {1748},
}