Wadh.Minasian 561 (The Ferdowsi Library, Wadham College, University of Oxford)

Summary of Contents: The book was written in 883 Qamarī/1478. The book of 'Bīst Bāb' of Khvājah Naṣīr al-Dīn Ṭūsī is one of the most famous books on the functions of an astrolabe. Mullā ʿAbd al-ʿAlī Birjandī, who was an expert in the field, gained access to the book and liked it, so wrote a gloss on it to make it accessible to all. This is a so-called 'text and commentary' work, i.e. it first introduces the Khvājah's idea about each topic and then proceeds to provide a commentary on the topic. The book has an introduction and twenty chapters, to begin with chapter one در القاب آلات و خطوط و دوایر اسطرلاب and chapter two در معرفة ارتفاع گرفتن از آفتاب ارتفاع چند از ثوابت که بر اسطرلاب ثبت کنند .