{"book":"adl0131","page":298,"text":"مساحت\n\nاست زاویه ع الف ب را ملاحظه کنید و فاصله الف ب را\nبذریعه جریب پیمائش کنید باز علم را بر نقطه ج قایم کنید و زاویه\nع ب ج را ملاحظه نموده فاصله ب ج را پیمائش کنید بعده علم را\nاز نقطه ب برداشته بر نقطه د قایم کرده زاویه ع ج د را مشاهده کنید\nو فاصله ج د را پیمائش کنید آخر کار زاویه ع د الف راست بده کرده\nفاصله د الف باید که پیمائش کرده شود -\n(۲۲۲) بذریعه طول های پیمائش شده و زاویه ها نقشه زمین را بذریعه\nپروتریکتیر تیار کنید ( پروتریکتیر مقسم آله است که بذریعه آله مذکور\nزاویه ها ساخته میشوند و نیز آله مذکور مختلف اقسام داشته میباشد\nبنسبت دیگر قسم پیمائش ها پیمائش خطوط بندش نهایت صحیح و\nضروری ولازمی است مگر اکثر توجه در پیمائش خطوط بندش کم میبا\nدر شکل مذکوره بالا پیمائش خط بندش الف ج یا دیگر خط مناسبت\nدر میان کدام نقطه قریب الف و نقطه ج کشیده شود که آسانی باشد)","chars":770,"image":"https://storage.googleapis.com/adl-page-images/adl0131/00298.jpg","first_page":1,"last_page":381,"title":"Kitāb-i ʻIlm i masāḥat کتاب عالم ا مساحت","permalink":"https://afghanpress.org/book/adl0131/298","canvas":"https://afghanpress.org/iiif/adl0131/canvas/298","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."}}