Rare Stanley’s Sounding Sextant c. 1950
This is a sextant specifically designed for coastal surveys. Not a nautical sextant. As it is for use as an all day working instrument and not for a few diurnal observations it is made much more solid and its optics take a more extended field of view. It is used horizontally as a surveyor would, and is thus not furnished with filters.
1) The box is also extremely sturdy. Its sides are 1/2” thick. It retains all of its original attractive varnish, In new condition. 2) Lid bears certificate of examination . 3) Instrument and accessories in box 4) Shows the individual accessories. The telescope has an additional eyepiece for different magnification. It is not a second telescope. The large peep sight (bottom left of photo) is usually seen only with this type of sextant. The silver register scale ranges from 0—200 degrees. A green filter is present. There is a fitting for a second.
The silvering on the smaller mirror surface is worn but still useable Otherwise the instrument and its accessories are in lovely condition.
Reference: Surveying and Levelling Instruments. William Ford Stanley, 3rd Edition 1901. p. 411 et seq.
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Always the Unusual |
Copyright Duncan Robert Antiques 2012. E&O E. |
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Nautical |