Various errors in paging.
First edition published 1632.
In 2 parts. Following pt. 1, included in the paging, but with individual t.p.'s. An addition unto the use of the instrument, called the circles of proportion, for the working of nauticall questions. Together with certaine necessary considerations and advertisements touching navigation ... Hereunto is also annexed the excellent vse of two rulers for calcvlation. Oxford, Printed by W.H. for R.D., 1660. Affixed to pt. 2 but included in the paging is The declaration of the two rulers for calcvlation.