eridian line I make choice of a center at C,in thevpperpart of the line,if it be the Southface, as here we fup-pofe it, that the ftyle may haue roome to point downward;but in the lower part of the line,if it be the North face of theplane5 for there the ftyle mil ft point vpward: and vpon thiscenter… … The ae[crtptim of 4 vcrtialfdecuning Mine. i 17 cle,from the meridian vnto A toward gt^c MMthand, be-caufe in this example the meridian of th emplane falls a-mong the houres after noone, (for otherwife it rnuft hauebeen inferibed toward the left hand) and there I draw theline C A feruing for the…
Internet Archive · Public Domain Mark 1.0. Free to use for anything.
![An illustration from Perspective cilindriqve et coniqve; ov, Traicte' des apparences veuës par le moyen des miroirs cilindriques & côniques, soient conuexes ou concaues; ensemble la construction & position des figures obiectées au [sic] mesmes miroirs, afin que leurs apparences soient conformes à la volonté (1630)](https://img.insideoutlibrary.com/img/200/ia-perspectivecilin00vaul-50-11.webp)
