When any line is appointed and without it a pricke, whereby
a parallel must be drawen howe you shall doo it.
Take the iuste measure beetwene the line and the pricke,
accordinge to which you shal open your compasse. Then pitch one
foote of your compasse at the one ende of the line, and with the
other foote draw a bowe line right ouer the pytche of the
compasse, lyke-wise doo at the other ende of the lyne, then draw
a line that shall touche the vttermoste edge of bothe those bowe
lines, and it will bee a true parallele to the fyrste lyne
appointed.
_Example._
[Illustration]
A.B, is the line vnto which I must draw an other gemow line,
which muste passe by the prick C, first I meate with my compasse
the smallest distance that is from C. to the line, and that is
C.F, wherfore staying the compasse at that distaunce, I seete
the one foote in A, and with the other foot I make a bowe lyne,
which is D, then like wise set I the one foote of the compasse in
B, and with the other I make the second bow line, which is E.
And then draw I a line, so that it toucheth the vttermost edge
of bothe these bowe lines, and that lyne passeth by the pricke
C, end is a gemowe line to A.B, as my sekyng was.