Large Mahogany Sextant Kings Patent Gregory & Wright
15 Inch Type B Vernier sextant with adjustable handle.
Type of object:
Sextant
Time period:
Britain rules the waves + France
Place:
London
Date:
1790
Maker / Author:
Gregory & Wright
Publisher / Printer:
Idem
Dimensions:
15 inch radius or 39 cm
Material:
Ebony frame with brass index arm and fitting. Ivory plate, Hnadle in Lo-ingum Vitae
Graduation:
-4 to 125°
Inscription:
Provenance:
England
References:
Taking the Stars, Peter Ifland: pag 44
Description
Very large Ebony Frame with Brass index arm and fittings.
Ivory plate. Double sided bras scale.
Handle in Lignum Vitae, can be positioned in vertical or
horizontal fixed position
Both Gabriel Wright and Henry Gregory held royal patents for navigational instruments, This "Kings Patent" refers to the index mirror: Kings patent Platform of index mirror can be rotated by a setscrew.
Additional information
