فائل:Balance spring types.png

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اصل فائل(1,540 × 313 پکسل، فائل کا حجم: 27 کلوبائٹ، MIME قسم: image/png)

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خلاصہ

تفصیل
English: Drawings of different types of watch and chronometer balance springs. Types: (1) flat spiral, including central collet and end stud, (2) Breguet overcoil, (3) chronometer helix, with axial view showing Breguet end curves, (4) early forms. The early springs are from Nelthropp, others are from Britten. Alterations: combined source images into a composite, removed captions and part labels, scaled and rotated Nelthropp image to match others, added new labels in color, converted to PNG.
تاریخ 1,873.0 و 1,898.0
ماخذ downloaded from Britten, Frederick J. (1898) On the Springing and Adjusting of Watches, Spon & Chamberlain, p.6-7, figs.2,3,4 and Nelthropp, Harry L.(1873) A Treatise on Watch-work, Past and Present, E.& F.N. Spon, London, p.187, fig.19 on Google Books
مصنف Frederick J. Britten and Harry L. Nelthropp
اجازت
(فائل کا دوبارہ استعمال)
Public domain - Britten died in 1913

اجازہ کاری

Public domain

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عکاسی

MIME type انگریزی

image/png

checksum انگریزی

6d4b3c29b59f29d91fdec265ea1a5ed13359e93f

طریق تعیین: SHA-1 انگریزی

data size انگریزی

27,462 لکمہ

313 عکصر

1,540 عکصر

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رائج الوقت15:59، 5 دسمبر 2007ءمورخہ 15:59، 5 دسمبر 2007ء کا تھمب نیل1,540 × 313 (27 کلوبائٹ)Chetvorno{{Information |Description=Drawings of different types of watch and clock balance springs. Types: (1)flat spiral, with central collet and end stud, (2)Breguet overcoil, (3)chronometer helix, with axial view showing Breguet end curves, (4)early forms. Th

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