The art of dialling : by a new, easie, and most speedy way : shewing how to describe the houre-lines upon all sorts of plaines howsoever, or in what latitude soever scituated : as also to find the suns azimuth, whereby the sight of any plaine is examined : performed by a quadrant, fitted with lines necessary to the purpose / invented and published by Samuel Foster ... compiled and editor, Frederick W. Sawyer III.