Fig. 2. The string is then tied, Fig. 3, to form a handle, Fig. 4.
--Contributed by James M. Kane, Doylestown, Pa.



** Equilibrator for Model Aeroplanes [11]

On one of my model aeroplanes I placed an equilibrator to keep it
balanced. The device was attached to a crosspiece fastened just
below the propeller between the main frame uprights. A stick was
made to swing on a bolt in the center of the crosspiece to which
was attached a weight at the lower end and two lines connecting
the ends of the planes at the upper end. These are shown in Fig.
1. When the aeroplane tips, as

[Illustration: Warping the Aeroplane Wings]

shown in Fig. 2, the weight draws the lines to warp the plane so
it will right itself automatically.
--Contributed by Louis J. Day, Floral Park, N. Y.



** Repairing Christmas-Tree Decorations [11]

Small glass ornaments for Christmas tree decorations are very
easily broken on the line shown in the sketch. These can be easily
repaired by inserting in the neck a piece of match, toothpick or
splinter of wood and tying the hanging string to it.