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Testing
The kite is now ready to be tested in different flying conditions. Make any necessary adjustments to suit the occasion. Calculate the speed of the wind by the help of the Beaufort Wind Scale (see p. 128). When you have done this, note whether at a given speed the tail is just right, or has to be weighted or lightened. Take note also whether the position of the kite line has to be altered. Such on-the-spot observations and adjustments are vital in attaining the skill so necessary for successful kite flying.
The reader may also be interested in the style of the Hargrave box kite, seen in Plate IV. On the basis of the illustration a scale plan could be prepared for guidance in the construction of the kite. As will be seen, it consists of a double framework, linked together by two main centre longerons. On the other hand, the bands could be linked together by means of four corner longerons.
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