Put the ring of thyn Astrolabie up-on thy right thoumbe, and
turne thy lift syde agayn the light of the sonne. And remeve
thy rewle up and doun, til that the stremes of the sonne shyne
thorgh bothe holes of thy rewle. Loke thanne how many degrees
5
thy rewle is areised fro the litel crois up-on thyn est line, and tak
ther the altitude of thy sonne. And in this same wyse maistow
knowe by nighte the altitude of the mone, or of brighte sterres.
This chapitre is so general ever in oon, that ther nedith no more
declaracion; but forget it nat. And for the more declaracioun,