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Diagraphe perspectograph, in fitted mahogany case

Diagraphe, perspective instrument for drawing from nature or orthogonal projection drawings

1890-1910

"Diagraphe", perspectograph for drawing from nature in perspective or orthogonal projection

1880-1910

Ronald's patent perspectograph, in red leather bound case

Ronald's perspectograph, in mahogany case

Selection of three perspective drawing instrument by Jecker Freres, Paris, in brass, one the same size as first and one larger, in wood; each in felt-lined mahogany box.

Perspective drawing instruments

1820-1829
Perspective drawing instrument on wooden base, invented by the late Hugh Cecil Robinson and made under his supervision by Stanley, Great Turnstile, London, with 6 working drawings and 3 tracings relating to instrument

Perspective drawing instrument on wooden base

1880-1910