Optico-photographic measurements of airplane deformations (1931)
NASA Technical Reports Server (NTRS) · leaf 18
Fig8.3^5^7>9 B.A.C.A. Teolmlcal Memorandim No.610 SeptIon A-B … Fig,9 Irror of meaeurement during rotation of oaxnera* points of measurement; H, optloal oenter of lens; Tig.5 Path of light rays In a 0^ pivot of oamera; ground- long-distaiioe lens. glass plate.
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