Richard
Richard Ad 1924
A 1906 catalog listing barographs, thermographs, and hygrographs as well as aneroid barometers is available here (18 pages):
A 1907 Richard catalog listing altimeters and altimeter-barometers is available here (22 pages):
From 1909, a Richard catalog of meteorological instruments may be downloaded below (68 pages):
A 1924 Richard catalog listing barographs, thermographs, hygrographs and other instruments is below (37 pages):
