Recueil des pièces et documents officiels concernant l'Exposition universelle de 1855
A French official report of the 1855 Paris Exposition universelle, compiled by M. E. Panis and published in Paris, aimed at exhibitors and administrators. The two pictures are plain technical diagrams of a stall-like enclosure, with a dimensioned plan marked profondeur maximum 1 mètre and a side elevation marked hauteur de 1 m. 50 à 2 m., with dimensions in metres along dashed guide lines. A designer could take from them a clear model of minimal line-drawn dimension callouts and the restrained grammar of regulatory diagrams.
