{"book":"adl0131","page":335,"text":"کتاب\n۳۲۴\nمساحت\n\nیا بطرف دست چپ—سوم—باید که کتاب همیشه پاک و صاف باشد\nو بهر شکل و بهر هندسه مثل آئینه صاف و جلا جلا باشد باید که روزمره کار پیمایش\nبذریعه سیاهی نوشته شود چرا که اگر بر قاعده مذکوره عمل کرده شود پس در\nهر عمود و بیرنگ اگر قدری شبه پیدا شود بآسانی رفع کرده میشود چهارم\nباید که یک حلقه بر تعداد و فاصله هر مقام کشیده شود تا که بیکدفعه بهر دو نظر\nبیفتد بطوریکه در نمونه ذیل بیان کرده میشود—\n\n[DIAGRAM]\n\nبذریعه","chars":419,"image":"https://storage.googleapis.com/adl-page-images/adl0131/00335.jpg","first_page":1,"last_page":381,"title":"Kitāb-i ʻIlm i masāḥat کتاب عالم ا مساحت","permalink":"https://afghanpress.org/book/adl0131/335","canvas":"https://afghanpress.org/iiif/adl0131/canvas/335","source":"https://afghanistandl.nyu.edu/books/adl0131/","source_pdf":"https://afghanistandl.nyu.edu/pdf/adl0131_download.pdf","rights":{"image":{"statement":"Public domain. NYU states: \"All works presented on this website are, unless otherwise indicated, in the public domain. The images available on this website may be freely reproduced, distributed and transmitted by anyone for any purpose, commercial or non-commercial.\"","uri":"http://rightsstatements.org/vocab/NoC-US/1.0/","holder":"New York University Libraries","source":"https://afghanistandl.nyu.edu/about.html","delivery":"Images are served from a copy mirrored by this project, not from NYU's servers, under the reproduction terms above.","endorsement":"This is an independent project. It is not affiliated with, endorsed by, or reviewed by New York University."},"text":{"statement":"Machine-generated transcription, dedicated to the public domain under CC0 1.0. No warranty of accuracy: see the provenance block on every page.","uri":"https://creativecommons.org/publicdomain/zero/1.0/","holder":"Steps Ventures"}},"provenance":{"text_produced_by":"gemini-3.1-pro-preview","thinking_level":"low","read_completed":"2026-08-09","per_page_confidence":null,"per_page_confidence_note":"Not recorded during the corpus run. No calibrated per-page score exists, and none is estimated here.","human_reviewed":false,"accuracy_context":"Roughly two thirds of characters agree with a modern printed edition of the same text. Much of the disagreement is editorial, not misreading. Treat the transcription as a finding aid and read the page image before quoting.","primary_source":"The page image. The text is an index into it."}}