Wednesday 27 September 2023

Lot 338

A Victorian ebony and gilt-brass vernier octant, by John Crichton, London, second half 19th...

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Lot 338

A Victorian ebony and gilt-brass vernier octant, by John Crichton, London, second half 19th...

Price Realised: £394

Estimate: £400 - £600

Price realised is hammer price plus fees (31.2% Buyers Premium inclusive of VAT).

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Lot 338

Description

A Victorian ebony and gilt-brass vernier octant, by John Crichton, London, second half 19th century, the ivory inlaid scale graduated to 105°, with vernier graduated to 20° and inset ivory plaque inscribed Crichton London, with three sight shades, horizon mirror and index mirror, in mahogany case bearing makers label and Great Exhibition label of 1851, octant - 30cm high, 24.5cm wide  

Ivory submission reference: W7KCCD5M    

Please note that Roseberys do not guarantee the working order of any scientific instrument. 

Note: The era of modern navigational instruments was ushered in by the concurrent invention of a doubly reflecting instrument by Thomas Godfrey (1704-1749) of Philadelphia and John Hadley (1782-1744) of London in the early 1730s. Originally this instrument was referred to as 'Hadley's quadrant' after the English inventor. Today it is known as an octant, the name given it by Godfrey. The instrument proposed by Hadley and Godfrey resembled the quadrant in shape but contained an arc of only forty-five degrees, one eighth of a circle. In addition, it had two mirrors which reflected the light of the sun or a star and enabled the observer to measure altitudes (the angle between the sun, the moon or a star or planet above the horizon) up to ninety degrees. This ability to measure large angles made the instrument especially useful for celestial navigation at sea.

Buyer's Premium

The buyer shall pay the hammer price together with a premium thereon of 26% up to £20,000 (31.2% inclusive of VAT), 25% from £20,001 - £500,000 (30% inclusive of VAT), 20% from £500,001 thereafter (24% inclusive of VAT). The premium price is subject to VAT at the standard rate.

VAT
VAT is not charged on the hammer price unless it is stated that there is 'VAT applicable on the hammer price at the end of the description. Buyer's premium is subject to VAT.
(ARR) - ARTIST'S RESALE RIGHT

Qualifying living artists and the descendants of artists deceased within the last 70 years are entitled to receive a re-sale royalty each time their work is bought through an auction house or art market professional.

It applies to lots with hammer value over £1,000 as follows:
0 to £50,000 - 4%
£50,000.01 to £200,000 - 3%
£200,000.01 to £350,000 - 1%
£350,000.01 to £500,000 - 0.5%
Exceeding £500,000 - 0.25%
ARR is capped at £12,500

Please note ARR is calculated in euros. Auctioneers will apply current exchange rates.

Export of goods

Buyers intending to export goods should ascertain whether an export licence is required before bidding. Export licences are issued by Arts Council England and application forms can be obtained from its Export Licensing Unit. Details can be found on the ACE website www.artscouncil.org.uk or by phoning ACE on 020 7973 5188. The need for import licences varies from country to country and you should acquaint yourself with all relevant local requirements and provisions before bidding. The refusal of any such licences shall not permit the cancelling of any sale nor allow any delay in making full payment for the lot.

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