Very fine and complete octant of ebony with ivory pencilholder and little slate on the backside to write down the observations. Early instrument with only a double peepsight. Binocucars and colored horizon glass shades are not yet fit. Mention the 18th century way of adjusting the horizon mirror.
Scale also of ivory reads from 0 to 103 degrees, nice engraved by hand.
Made by Norie, London.

Catalog: NM.2-02
Date: circa 1800
HW octant: 30×24,7 cm (12×9,7”)
Signed: NORIE & Co LONDON
Origin: England
Condition: perfect