A description, with instructions for the use, of a newly invented surveying instrument, called the trigonometer.
Subtitle: For the making and vending of which, the inventor hath obtained an exclusive right for twenty-one years, from the legislature of Pennsylvania. ... : The whole illustrated with cuts, and an elegant engraving of the instrument.
By: By George Wall, Junior, of Bucks County, Pennsylvania.
Series: Early American imprints -- no. 21568.
Publisher: Printed by Zachariah Poulson, Junr. on the west side of Fourth-Street, near the University.
Published: 1788
Place of publication: Philadelphia
Language: eng
Format: Microform
Number of pages: 32
Subjects: Surveying -- Instruments.
Notes: Evans 21568.

Rink, E. Technical Americana, 2372.

Microfiche. [New York : Readex Microprint, 1985] 11 x 15 cm. (Early American imprints. First series ; no. 21568).