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Berkas:Balance spring types.png

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Ringkasan

Deskripsi
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.
Tanggal dan 1898
Sumber 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
Pembuat Frederick J. Britten and Harry L. Nelthropp
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Public domain - Britten died in 1913

Lisensi

Public domain

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1873

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checksum Inggris

6d4b3c29b59f29d91fdec265ea1a5ed13359e93f

27.462 Bita

313 piksel

1.540 piksel

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Tanggal/WaktuMiniaturDimensiPenggunaKomentar
terkini5 Desember 2007 15.59Miniatur versi sejak 5 Desember 2007 15.591.540 × 313 (27 KB)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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