Size | Height 306 mm, width 209 mm. | Watermark | Two watermarks. Crown, form 1. Thin crossbow. Drake's identification: Watermark type 6. Drake's description: Thin crossbow 40 X 30mm. | Comments | The folio is part of a larger sheet of paper combining the folios 136 and 137 . Contains drawings, calculations, minimal text. |
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| | Folio 137 r (final text) | 1 | is ad or ut ab ad bd | C01 | 90 * 45 = 450 + 360[0] = 4050 2 * 1 = 2 4050 : 2 = 2025 sqrt 2025 = 45 | C02 | 2 * 1 = 2 18 : 2 = 9 32 | C03 | 90 * 45 = 450 + 360[0] = 3650 2 + 1 = 3 4050 : 3 = 1350 sqrt 1350 = 3[7] | C04 | 68 * 34 = 272 + 204[0] = 2312 |
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