The art of dialling : performed geometrically ... arthmetically ... instrumentally ... (1700)
Leybourn, William, 1626-1716 · London : T. Braddyll · leaf 36
freight Lines, which will be feme light and ea(e to the Pta&itioner, that fo he may com¬ pare one Way with the other in cafe of any doubt, which will be a good confirmation of his Work. Another veay to find the Azimuth. LEt the given Latitude be 51 deg. 32 min. The Declination North, 20 deg. The… … Secondly, Set (by help of your Line of Chords) 5 1 deg. 32 min. the Latitude of the place, fcomZ to$), and draw M Qjox the iEquinoftial. Thirdly,
