The art of dialling : performed geometrically ... arthmetically ... instrumentally ... (1700)
Leybourn, William, 1626-1716 · London : T. Braddyll · leaf 56
evation above it ; wherefore the Hour-lines in thefe Dials mull: be paral¬ lel to one another, and confequently parallel to the Axis of the World. And the Dial muft have no Centre.* How¬ ever the Dial may be drawn as folioweth. Example, Of an Eaft Direft Dial, in the Latitude of London 5 1 deg. 3 2…
![An illustration from Divina proportione : opera a tutti glingegni perspicaci e curiosi necessaria oue ciascun studioso di philosophia: prospettiua pictura sculptura: architectura: musica: e altre mathematice: suavissima: sotile: e admirabile doctrina consequira: e delecterassi: co[n] varie questione de secretissima scientia (1509)](https://img.insideoutlibrary.com/img/200/ia-divinaproportion00paci-112-295.webp)
