[Illustration: FIG. 115.--Details of stretcher attachment for
diamond-shaped box kites.]
Diamond Box Kites.--In another type of box kite the boxes have four equal
sides, but the boxes are rhombus-shaped, as in Fig. 116, the long diagonal
being square to the wind, and the bridle attached at the front corner.
For particulars of design and construction I am much indebted to Mr. W. H.
Dines, F.R.S., who has used the diamond box kite for his meteorological
experiments to carry registering meteorographs several thousands of feet
into the air.
The longitudinal sticks used at the corners have the section shown in Fig.
115. They are about four times as wide at the front edge, which presses
against the fabric, as at the back, and their depth is about twice the
greater width. This shape makes it easy to attach the shorter stretchers,
which have their ends notched and bound to prevent splitting.
[Illustration: FIG. 116.--Plan of diamond box kite, showing arrangement
of stretchers.]
Fig. 117 is a perspective diagram of a kite. The sail of each box measures
from top to bottom one-sixth the total circumference of the box, or, to
express the matter differently, each face of the box is half as long again
as its depth.
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