A Mark I Mod O Ball Recording Sextant signed MERGENTHALER LINOTYPE COMPANY NEW BROOKLYN, NEW YORK U.S. NAVY BUSHIPS 1944, in wooden carrying case - 12¼in.wide; a type of azimuth circle signed and numbered RITCHIE, BOSTON Pat AUG 30 1892, 243, in mahogany carrying box - 9½in wide; and a German W.W.II gyro SEEKREISELSEXTANT (incomplete) (3)