An ebony octant, the ivory plaque on the cross-arm signed Spencer, Browning & Fust. London, inset ivory arc divided 0 - 99 and inscribed I.B.R., three horizon mirror shades, brass index arm (radius 12in. (30cm.) (lacking index mirror shades and carrying case); an 18 inch brass roller parallel ruler; and an 18 inch gun-mounting type telescope (3)