File:Britannica Goniometer Horizontal-Circle.png
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Size of this preview: 600 × 600 pixels. Other resolutions: 240 × 240 pixels | 480 × 480 pixels | 763 × 763 pixels.
Original file (763 × 763 pixels, file size: 29 KB, MIME type: image/png)
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Date/Time | Thumbnail | Dimensions | User | Comment | |
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current | 12:59, 5 August 2009 | 763 × 763 (29 KB) | Bob Burkhardt | {{Information |Description={{en|1=Technical illustration of a horizontal-circle goniometer.}} |Source=Encyclopædia Britannica, 11th ed., Vol. 12, p. 234 |Author=unknown; instrument by R. Fuess of Berlin |Date=published 1911 |Permission={{PD-Britannica}} |
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