Pierced semicircle. Compass with rose of 16 points and 0-90-0-90-0° every 2° and 5°.Points labelled in French initials. Blued needle type 10. Limb divided 0-180° and 180-0° every 1°. Verinier to alidade to 5'. Original fitted wooden case lined in green wool fabric. Two latch hooks.
