@article{570088,
      note = {"The public are indebted solely to my son, J.L. Martin,  for the invention .." (Preface); he was awarded patent no.  1088 in 1774.},
      author = {Martin, Benjamin,},
      url = {http://library.usi.edu/record/570088},
      title = {An explanation of a new construction and improvement of  the sea octant and sextant, containing, A most easy,  expeditious and accurate Method of adjusting and rectifying  those Instruments for Use both at Sea and Land. Also the  best Disposition of the Glasses; with Directions for making  the Fore and Back Observations; and the several Steps in  the Process of finding the Longitude at Sea. Illustrated by  four Copper-Plates. By B. Martin. [electronic resource] :},
      publisher = {printed for the author, at No. 171, Fleet-Street,},
      recid = {570088},
      pages = {[2],37,[1]p., fold.plates ;},
      address = {London :},
      year = {1775},
}