The book Technograph volume 38 1925 1926 was written by author Edward Stanwood Here you can read free online of Technograph volume 38 1925 1926 book, rate and share your impressions in comments. If you don't know what to write, just answer the question: Why is Technograph volume 38 1925 1926 a good or bad book?
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0 4. (1 5. 5 78. 2 KWKMAO Oranse Black S 0. 0 41. 4 3. 6 5. 9 67. 8 DKMKRA Black Red 9 5. 9 41. 0 3. 7 5. 7 62. 1 WUKMKRA White Red in 0. 0 59. 0 3. S 6. 4 93. 0 . MWKAKDR Black Yel-w 11 1. 0 65. 0 3, 9 6. 4 72. 4 KMRWDAK L'v'dr 12 5. 9 41. 0 3. 9 5. 4 50. 6 WKDAMRK Yellow Blue NOTE: All obse rvers read all letters in five second j^ Observers : . Lunio Civ I F. NBin eering Students C. E 54 ria The first groitii of tests were conducted under artificial conditions similar to those encountered in ...night driving. The a])i)ai'atus for these tests con sisted of a rectangular box four by six feet in size mounted on a pedestal so that the box could be swung in a complete horizontal circle. The interior of the box was painted a dead black so that the reflection of light would be the least possible, which is about the condition of the actual background of highway signs. A spotlight was ari;inged to throw a direct ray into the [tt)X and thus illuminate the signs placed therein. These artificial tests were con- ducted ii]>on three sets of signs, and were twelve, twenty-five and ten in number.
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