To knowe justly the 4 quarters of the world, as Est, West,
North, and South.
Tak the altitude of thy sonne whan the list, and note wel the
quarter of the world in which the sonne is for the tyme by the
azymutz. Turne than thin Astrelabie, and set the degre of the
sonne in the almykanteras of his altitude on thilke syde that the
sonne stant, as is the manere in takyng of houres, and ley thy
label on the degre of the sonne; and rekene how many degrees of
the bordure ben bitwixe the lyne meridional and the point of thy
label, and note wel that nombre. Turne than ageyn thin
Astrelabie, and set the point of thy gret rule there thou takist
thin altitudes upon as many degrees in his bordure fro his
meridional as was the point of thy label fro the lyne meridional
on the wombe side. Take than thin Astrelabie with bothe hondes
sadly and slighly, and let the sonne shyne thorugh bothe holes
of thy rule, and slighly in thilke shynyng lat thin Astrelabie
kouche adoun evene upon a smothe ground, and than wol the verrey
lyne meridional of thin Astrelabie lye evene south, and the est
lyne wol lye est, and the west lyne west, and the north lyne
north, so that thou worke softly and avysely in the kouching. And
thus hast thou the 4 quarters of the firmament.
