The description and use of a portable instrument vulgarly known by the name of Gunter's quadrant ...
Subtitle: to which is added, The use of Nepiar's [sic] bones in multiplication, division, and extraction of roots ...
By: by William Leybourn
Edition: The third edition, with the addition of the use of Gunter's quadrant ... / by Charles Leadbetter.
Publisher: Printed for J. Wilcox
Published: 1731
Place of publication: London
Language: eng
Number of pages: 81
Subjects: Sundials; Early works to 1800; Quadrants (Astronomical instruments); Mathematical instruments
Other titles: Art of numbring by speaking-rods
Notes: Signatures : A-N⁶.

The art of numbring by speaking-rods, vulgarly termed Nepier's bones ... (London : Printed by J. Wilcox, 1732) is separately paginated and has its own title-page.

ESTC T127868