The mariners compass compleated [pt. 1]: or, The complement of the art of navigation discover'd and propos'd
Subtitle: Being a dissertation concerning the magnetical variations of the mariners compass, and the variation of that same variation, (according to a new hypothesis and system.) As also directions for the use of an universal instrument, invented for ready knowing the variations of the mariners compass, at all times and places
By: By Z.W.
Publisher: Printed for the author.
Published: 1740
Place of publication: London
Language: eng
Number of pages: 47
Notes: Dedication to the King & the royal family signed (p. [iii]): Zachariah Williams.

Also reissued in 1745 with cancel t.-p., & pt. 2 added.