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© Wm. R. Robertson

A cased Octant by Wm. R. Robertson


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A working copy of a 18th c. Octant featuring jointed ebony frame. engraved ivory scales, brass, glass and mirror optics.

Copyright

© Wm. R. Robertson
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From the album:

Accessory & Other Objects

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Photo Information

  • Taken with NIKON E885
  • Focal Length 8 mm
  • Exposure Time 8403361/100000000
  • f Aperture f/2.8
  • ISO Speed 100
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