{"book":"adl0131","page":239,"text":"کتاب\n۲۲۸\nمساحت\n\nمذکور را بر نقاط دوی بگذارید و از نقطه تنصیف مذکور گرفته خوب\nکش کرده کج کنید و فرض کنید که ریسمان خوب هموار شود پس\nنقطه تنصیف ریسمان مذکور بر نقطه ج میرسد در میان نقاط\nالف ب ج وف خطی یکجا کنید پس خط ج ف خط مستقیم\nمطلوب خواهد بود -\n(۱۸۱) پس از بیان مذکوره بالا ظاهر شد که مقام عمود مطلوبه\nریسمان دریافت کرده میشود مگر لئیندر سورویر یعنی پیمائش کننده\nزمین بجهت دریافت نمودن مقام عمود مطلوبه یک آله در استعمال\nمی آورند و آله مذکور را در زبان انگریزی (کراس) میگویند\n(۱۸۲) (کراس) نام آله است که پیمائش کننده بجهت پیمائش\nزمین استعمال میکنند -\n(کراس) عموماً یک مدور تخته چوبی میباشد و قطر تخته مذکور\nتقریباً انج میباشد و دو خطوط باریک همراه تخته مذکور بانگ\n\nزاویها","chars":673,"image":"https://storage.googleapis.com/adl-page-images/adl0131/00239.jpg","first_page":1,"last_page":381,"title":"Kitāb-i ʻIlm i masāḥat کتاب عالم ا مساحت","permalink":"https://afghanpress.org/book/adl0131/239","canvas":"https://afghanpress.org/iiif/adl0131/canvas/239","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."}}