细节
A surveying level,
by W.F. Stanley in case, with outer canvas cover 13in. (33cm.) wide with staff and tripod; a 19th-century pocket compass in mahogany case; a marching compass in leather case; and a photogrammetry instrument by Casella in case 18¼in. (46.4cm.) wide
by W.F. Stanley in case, with outer canvas cover 13in. (33cm.) wide with staff and tripod; a 19th-century pocket compass in mahogany case; a marching compass in leather case; and a photogrammetry instrument by Casella in case 18¼in. (46.4cm.) wide