细节
A 19th-century lacquered-brass single-arm drawing protractor,
signed W & S JONES 30 Holborn LONDON, 6in. (15.2cm.) diam.: a bar pillar-type pair of folding compasses in case; another pair of compasses in case; and a Goodman's patent planimeter by T.R. Harding & Son, Leeds, in plush-lined leatherette-covered case 11 5/8in. (29.5cm.) wide, with photocopy of patent specification (4)
signed W & S JONES 30 Holborn LONDON, 6in. (15.2cm.) diam.: a bar pillar-type pair of folding compasses in case; another pair of compasses in case; and a Goodman's patent planimeter by T.R. Harding & Son, Leeds, in plush-lined leatherette-covered case 11 5/8in. (29.5cm.) wide, with photocopy of patent specification (4)