| 21. | Pairs of interplane struts leaned outwards and diverged toward the more widely separated upper wing spars.
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| 22. | This differed principally in having a pair of triangular rudders mounted on the aft outboard interplane struts.
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| 23. | The Special was a chord, unequal-span wings connected by pairs of parallel interplane struts.
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| 24. | Steel tube was also used for the interplane struts, these being of a special streamlined section.
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| 25. | These had an even larger vertical tail, interplane struts of narrower chord, and no wheel spats.
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| 26. | The lower wing was close to the ground so two underwing skids were added below the interplane struts.
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| 27. | There were outboard outwardly-splayed interplane struts with the braced stabilising single-stepped floats mounted below.
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| 28. | The Perch was a two bay biplane, though the inner interplane struts were close to the fuselage.
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| 29. | The upper pair formed a stagger, with the interplane struts at about 30?to the wing normal.
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| 30. | A pair of stabilizing floats were mounted outboard, braced to the wings spars under the outer interplane struts.
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