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Bob Gauert:
The ratios of the Iron Cross are: H=height and width; B=base width of the arm= .4H; R=radius of the curve of the arm=1.3H. example, 500 mm cross, H=500mm,
B = 500 x.4 = 200 mm,(100mm each side of the vertical and hoizontal center-lines.)
R = 1.3 x 500mm = 650 mm radius from the center-lines through the tip of the cross arm.
Blue skies,
Dan-San Abbott
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