5
meridional lyne, and set ther a-nother prikke. And whan that
this is don, considere the altitudes of hem bothe; for sothly the
difference of thilke altitudes is the declinacion of thilke degree
fro the equinoxial. And yif so be that thilke degree be northward
fro the equinoxial, than is his declinacion north; yif it be southward,
10
than is it south. And for the more declaracioun, lo here
thy figure.
[21.] To knowe for what latitude in any regioun the almikanteras of any table ben compouned.