@article{660531,
      note = {Price in square brackets: (Price Six-Pence.)},
      url = {http://library.usi.edu/record/660531},
      title = {The Construction and use of the sea quadrant, commonly  called Hadley's quadrant. Containing such directions, as  are necessary to render the use of this noble instrument  both easy and certain, particularly with respect to the  back observation, which has been hitherto neglected for  want of proper instructions. To which is added, an  introduction, explaining the theory of the instrument in a  plain and familiar manner, with correct tables of the sun's  declination, which being calculated for four years are  thereby rendered perpetual. [electronic resource] :},
      publisher = {Printed for F. Watkins, optician, at Charing-Cross,},
      recid = {660531},
      pages = {[2],18p. :},
      address = {London :},
      year = {1757},
}