{"book":"adl0131","page":296,"text":"کتاب\n۲۸۵\nمساحت\n\nمی بینید در جه های قرص مذکور و ثلث های درجه ها را خوانده میتوانند\nوقرص مقسمی چسپان میباشد که محور قرص مذکور را که خط در میانه\nمرکز و درجه صفر کناره مذکور میباشد بالکل بر نصف النهار\nمغناطیسی منطبق میشود و درجه هائیکه بوقت ملاحظه چیز مطلوب خوانده\nمیشوند آن زاویه را تعبیر میکنند که در میان سمت چیز مطلوب\nو مقناطیسی نصف النهار میباشد و مغناطیسی نصف النهار\nیک نقسم خط قایم میباشد که برصوبه کدام ملک کلان نیز اتنا که محسوب با\nمبدل نمیکند.\n\n(۲۲۰) بوقت عمل سوزن مغناطیسی قبل از قایم شدن بالای مقناطیسی\nنصف النهار شور میخورد و انتظار ساکن شدن سوزن مغناطیسی\nبرای اهل نظاره پیدا میشود و بجهت ایستاده کردن سوزن مذکور\nیک کمانی ساخته شده میباشد که قرص کمانی را زور داده باعث\nزور اعتبار کرده نمیشود که سوزن بالای نصف النهار مقناطیسی","chars":734,"image":"https://storage.googleapis.com/adl-page-images/adl0131/00296.jpg","first_page":1,"last_page":381,"title":"Kitāb-i ʻIlm i masāḥat کتاب عالم ا مساحت","permalink":"https://afghanpress.org/book/adl0131/296","canvas":"https://afghanpress.org/iiif/adl0131/canvas/296","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."}}