Microscope - Zeiss Ikon AG, Goerzwerk Berlin - 1940-1950 - Germany - Ancien colorimètre médical

Vintage German Zeiss Ikon medical colorimeter, Model D, using the Crecelius-Seifert method, probably dating from the 1940s–1950s. This precision scientific instrument was used in medical laboratories and pharmacies to determine blood glucose levels before the advent of modern electronic devices. It works by visually comparing the color of a chemically treated blood sample with a colored reference disc, making it possible to determine the sugar concentration. Made by Zeiss Ikon AG, Goerzwerk Berlin, it features a black metal body, a vertical optical tube, a mechanical adjustment system, and an ivory-colored circular base. It comes with its black storage case and original documentation bearing the inscription “Blutzucker-Kolorimeter nach Crecelius-Seifert.” A fine collectible scientific and medical instrument, representative of the evolution of blood analysis techniques in the 20th century. Shows signs of use and a patina consistent with its age. Overall condition as shown in the photographs.







Highly sought after in the worlds of industrial design, scientific curiosities, vintage medical technology, laboratory optics, steampunk, and rare measuring instruments.
Ideal for a collector, industrial loft decor, a cabinet of curiosities, or a scientific display case (theodolite, microscope, sextant, compass).