Description of the trigonall sector
Published: 1650
Place of publication: London
Language: eng
Number of pages: 28
Subjects: Triangle; Early works to 1800
Other titles: Trigonall sector.; Of the trigonall sector.
Notes: Title-page wanting; information supplied from Watt. Bibliotheca Brittanica (dates it 1680) and Robertson, John. A treatise of ... instruments.

Caption title: Of the trigonall sector.

"To the reader" signed: J. C.

Microfilm. New York, N.Y. : Columbia University Libraries, 1985. 1 microfilm reel. 35 mm.