{"book":"adl0131","page":355,"text":"کتاب ۳۴۴ مساحت\n\nمختلف بظهور می آیند مگر در درجه های مذکوره همیشه یکسان فرق\nخواهند آمد پس در چنین حالت برای مساح لازم میشود که در\nکل پیمایش بذریعه یک آله کار پیمایش خود را در عمل آورد\nتغیر کمپاس مراد از کسرهای درجه ها میباشد که مساح از شمال صحیح\nدر شرق یا مغرب میخواند در بعض حصص نصف کره شرقی\nو نصف کرۀ مغربی تغیر صحیح از شمال بطرف مغرب میباشد اکثر\nدر کمپاس یعنی آله تغیر جدا میباشد مگر بعض آله با هم بالکل مطابق\nهم میباشند لکن بذریعه امتحان گرفتن بعض آله بهتر است\nکه او تغیر را جدا بداند وقتیکه در بعض ضلع چند آله با هم مطابق\nمعلوم شوند پس تغیر آله برای ضلع مذکور تقریباً بیان کرده میشود\nمگر چونکه بسیار اسباب متضاده بقسم جمع میشوند که بر سوزن\nاثر میکنند (بطوریکه بودن آهن در زمین سبب است) پس\nتغیر یک کمپاس در یک ضلع نیز متواتر مبدل شده میرود","chars":742,"image":"https://storage.googleapis.com/adl-page-images/adl0131/00355.jpg","first_page":1,"last_page":381,"title":"Kitāb-i ʻIlm i masāḥat کتاب عالم ا مساحت","permalink":"https://afghanpress.org/book/adl0131/355","canvas":"https://afghanpress.org/iiif/adl0131/canvas/355","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."}}