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This photo shows the two levels in use to check
that the horizontal stabilizer is level. These levels have been checked and
calibrated to each other. Also, the string in the photo is attached to a pin.
The pin is pushed in the center of the fuselage into the balsa that is glued
between the fuselage sides in the wing saddle area. The string is then
stretched and marked at the elevator opening (the corner) and the distance is
checked at both elevator corners. They must be the same distance from the
pin. More next month!
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