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SEXTANT IN MAHOGANY-WOODEN TRAVELLING BOX W. YOULE CA. 1850

Elegant sextant in lattice frame carried out in brass and copper.
The sextant has been fitted with a lot of attachments: four coloured sun glasses, three horizon glasses, three telescopes, propeller turner, adjusting tenon and eye cap.
Scale of 0 up to 120 degrees, with magnifying glass and vernier to 10 seconds.
Scale partitioning and sliding gauge of platinum.
Made and signed by William Youle Leadenhall Street London, worked at this address from 1845 - 1866.
Nice mahogany-wooden quarter circle crate with key.
High quality and complete implementation.

SOLD

EBONY WOOD OCTANT CA. 1840

Very refined octant from ebony wood, made by Stephen Winckworth Silver.
Nice execution with two sets of coloured glasses and prism viewer.
Angle measurement up to 90 degrees, ivory scale division and venier.
Nice original mahogany wood chest with a lot of patina.
Length alidade: 30.5 cm (12 inches)
Great quality and very smooth.

SOLD TO THE USA

A SPENCER & BROWNING HADLEY' S QUADRANT, CIRCA 1780

A nice octant from the series of large octants from the 18th century.
A very beautiful signed large octant by the London firm of Spencer & Browning.
With ivory scale division for angle measurement of 0 to 90 degrees.
Mounted on the frame white green and red bilge glasses.
The bent middle arch on the ivory plate has the name of the makers but also the name
of the original owner of the octant, captain James Irvine.
Nice big stepped oak case in shape of a quarter circle.
14 inch (36) cm radius.
On the inside a vignette by instrument makers Dudly of Portsmouth.
Very nice quality.

SOLD TO THE US

Sextant In Mahogany Chest

Nicely crafted sextant with many accessories: various eye caps, coloured glasses,
prism viewers and tools for deconstructing, regulating and cleaning.
Measurement angle up to 120 degrees, scale division and platinum vernier.
Manufactured and signed by Heath & Co. London.
Certificate from the National Physical Laboratory.
High quality and complete version.
Hardly traces of use.

SOLD