Sheraton, Thomas; Bensley, Thomas; Mathews, James; Bensley, Thomas [Oth.]; Mathews, James [Oth.]; Terry, George [Oth.]; Jordan, Jeremiah Samuel [Oth.]; Wayland, L. [Oth.]: The Cabinet-Maker And Upholsterer's Drawing-Book: In Three Parts (London: Printed For The Author, By T. Bensley; And Sold By J. Mathews ... C. Terry ... J.S. Jordan ... L. Wayland ... And By The Author, 1793)

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incides with the point 7 on the other limb of the inftrnment, as
Fig. .5 clearly exprefles. In this pofition keep the fe&or, and
moving the compafies to 1.1, which is the nearelf figure to the
center of the inftrnment, contract their legs till you take the
opening 1.1, which, if correctly done, will be one-feventh part
of the line 7.7, as propofed. Perhaps it may be required to
divide a line into fourteen; if fo, then as there are only ten on
the line of lines, you take half the length of the given line
in your compafies, and place their legs on the points 7.7 as be-
fore ; and, as this opening is but half the length of the line to
be divided, the compafies muft be contracted to 1.1 as before,
and then the line will be divided into fourteen, becaufe twice
feven is fourteen.
In this way any right line, to be divided into any number
of parts, may be brought upon the feCtor. To make this ftill
more plain, let it be propofed that a line twice the length of
the line 7.7 is to be divided into twenty-eight equal parts. Take
the line 7.7 in your compafies, and proceed in all refpeCts as
before, except one thing, i. e. in place of contracting the legs
of the compafies till they touch the points 1.1, you muft draw
them in till they touch the lines at half the diftance of 1.1 from
the center, as the dark line next the center of Fig. 5 thews.
This opening of the compafies will turn fourteen times on the
E Hue