Navigational current correction calculator stamped "L.C. Bailey R.N.F.R.A.S."
- Made:
- London
- maker:
- Elliott Brothers
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LicenseThis image is released under a CC BY-NC-SA 4.0 Licence
Buy this image as a print
BuyLicense this image for commercial use at Science and Society Picture Library
LicenseThis image is released under a CC BY-NC-SA 4.0 Licence
Buy this image as a print
BuyLicense this image for commercial use at Science and Society Picture Library
LicenseThis image is released under a CC BY-NC-SA 4.0 Licence
Buy this image as a print
BuyLicense this image for commercial use at Science and Society Picture Library
LicenseNavigational current correction calculator stamped L.C
Science Museum Group
© The Board of Trustees of the Science Museum
Navigational current correction calculator stamped "L.C
Science Museum Group Collection
© The Board of Trustees of the Science Museum
Navigational current correction calculator stamped "L.C
Science Museum Group Collection
© The Board of Trustees of the Science Museum
Navigational current correction calculator stamped "L.C
Science Museum Group Collection
© The Board of Trustees of the Science Museum
Navigational current correction calculator stamped "L.C. Bailey R.N.F.R.A.S.", made by Elliott, 30 Strand London, in case, B1937, A162116
Designed by L C Bailey of the Royal Navy and a Fellow of the Royal Astronomical Society, this instrument computes corrections to a ship’s course to allow for the effect of currents. The arm of the protractor is placed over the point on the semicircular scale which corresponds to the speed and direction of the current. The change in course necessary to optimise the speed of the ship can then be read off the protractor at its other end.
Details
- Category:
- Mathematics
- Collection:
- Sir Henry Wellcome's Museum Collection
- Object Number:
- 1989-634
- Materials:
- leather, paper (fibre product), brass (copper, zinc alloy) and velvet
- Measurements:
-
overall: 189 mm x 64 mm x 15 mm,
- credit:
- On loan from the Wellcome Trust
