the diptych dial with pierced lid and the upper outer face with a nocturnal, engraved with hour and calendar scales, volvelle with hour scale mounted at each hour with a small knob so that the instrument could be used by touch during the hours of darkness, engraved floral decoration overall and index arm engraved INDEX, upper inner face engraved with a list of thirty four French towns and latitudes within floral border, hinged equinoctial dial below mounted above the compass bowl (compass missing)engraved with four degree quadrants and each corner with a wind cherub, the base engraved with 180 degree scale and titled Cadran General servant pour toutes provinces 1608, decorated with floral bouquets and engraved with a list of theity eight continental cities and latitudes under the headings Hespaigne, Italie, Angleterre, Allemagne, Grece 2 1/2 by 2 1/8 by 5/8in (6.4 by 5.5 by 1.5cm)