Title: A description of pocket and magazine cases of mathematical drawing instruments; in which is explained the use of each instrument, and Particularly of the Sector and Plain Scale, in the Solution of a Variety of Problems; Likewise, the Description, Construction, and Use, of Gunter's Scale. Illustrated with copper-plates. By J. Barrow, Private Teacher of the Mathematics.
Publisher: printed for J. and W. Watkins, No. 5, Charing-Cross, Optical, Mathematical, and Philosophical, Instrument Makers to their Royal Highnesses the Duke and Duchess of York, and His Royal Highness the Duke of Clarence