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ASTM F1165 PDF
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Standard Test Method for Measuring Angular Displacement of Multiple Images in Transparent Parts
| Published by | Publication Date | Number of Pages |
| ASTM | 05/01/2020 | 4 |
ASTM F1165 – Standard Test Method forMeasuring Angular Displacement of Multiple Images in TransparentParts
1.1 This test method covers measuring the angular separation of secondary images from their respective primary images as viewed from the design eye position of an aircraft transparency. Angular separation is measured at 49 points within a 20 by 20° field of view. This procedure is designed for performance on any aircraft transparency in a laboratory or in the field. However, the procedure is limited to a dark environment. Laboratory measurements are done in a darkened room and field measurements are done at night (preferably between astronomical dusk and astronomical dawn).
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