A late 18th Century Butterfield-type brass octagonal dial, signed Haye AParis, further engraved Pour le Latitudes de 40, 41,42,43 Degrez, 48, 49, 50, 51, 53, the underside engraved with the names and latitudes of 23 continental cities and towns, the spring loaded bird gnomon with adjustable latitude arc engraved with scrolls and foliage and engraved 40°-55°, with original plush lined fishskin covered pocket case - 3 1/8in.(8cm)long; and a brass horizontal pocket sundial, unsigned, with detachable gnomon - 2 3/8in(6cm)diam.