Lot Essay
SEE ILLUSTRATION
19TH CENTURY
Details
AN EBONY-FRAMED OCTANT
19TH CENTURY
SIGNED AD & SON EDINBURG, THE IVORY SCALE IMPRESSED WITH THE TRADE MARK FOR SPENCER, BROWNING & RUST, INDICATING THAT THE INSTRUMENT SCALE WAS DIVIDED ON RAMSDEN'S ENGINE, WITH THREE SHADES, MIRRORS, PIN HOLE SIGHT, THE INDEX ARM 10 3/4 INCHES RADIUS, WITH IVORY VERNIA SCALE
19TH CENTURY
SIGNED AD & SON EDINBURG, THE IVORY SCALE IMPRESSED WITH THE TRADE MARK FOR SPENCER, BROWNING & RUST, INDICATING THAT THE INSTRUMENT SCALE WAS DIVIDED ON RAMSDEN'S ENGINE, WITH THREE SHADES, MIRRORS, PIN HOLE SIGHT, THE INDEX ARM 10 3/4 INCHES RADIUS, WITH IVORY VERNIA SCALE