Details
AN EBONY-FRAMED OCTANT
19TH CENTURY
WITH IVORY SCALE AND MAKERS PLATE, BRASS FITTINGS, SEVEN SHADES, MIRRORS, TELESCOPE MOUNTING, THE INDEX ARM 9 5/8 INCHES RADIUS, WITH IVORY VERNIA SCALE, TANGENT SCREW, FINE ADJUSTMENT, ROSEWOOD HANDLE, TWO SIGHTING TUBES AND MAKERS TRADE LABEL FOR SEPTIMUS A. CAIL, NEWCASTLE, IN KEYSTONE-SHAPED CASE
39CM. LONG