18TH CENTURY MARINER'S POCKET COMPASS

Rare Georgian-era double paper all brass compass with paper dials indicating date of the late 18th century (circa 1790), measures 8.6cm (3 3/8in) diameter; the machining is very fine and early as are the paper compass roses; the compass itself has a paper dial divided into 32 cardinal points of navigation and the degree circle in four 90-degree quadrants subdivided into one-degree increments; the steel needle still points north; note the glass crystal which encloses the face is missing