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of inke. Take than a compas, and mesure evene the middel
by-twixe bothe prikkes; and set ther a prikke. Take thanne
a rewle, and draw a stryke, evene a-lyne fro the pin un-to the
middel prikke; and tak ther thy lyne meridional for evere-mo, as
in that same place. And yif thow drawe a cros-lyne over-thwart
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the compas, iustly over the lyne meridional, than hastow est and
west and south; and, par consequence, than the nadir of the
south lyne is the north lyne. And for more declaracioun, lo here