Details
A brass folding arm protractor,
by F. ROBSON & CO. NEWCASTLE-UPON-TYNE, with silvered scale, tangent screw fine adjustment and clamp, in fitted mahogany case -- 9 5/8in. (24.5cm.) wide; and a planimeter by Allbrit, in case -- 9 1/8in. (23.2cm.) wide
See Illustration (part lot) (2)
by F. ROBSON & CO. NEWCASTLE-UPON-TYNE, with silvered scale, tangent screw fine adjustment and clamp, in fitted mahogany case -- 9 5/8in. (24.5cm.) wide; and a planimeter by Allbrit, in case -- 9 1/8in. (23.2cm.) wide
See Illustration (part lot) (2)