Founded in 1864 in Berlin, SCHMIDT + HAENSCH has established itself as a pioneering force in the development of precision optical instruments and analytical technologies. With a deep-rooted heritage in fine mechanics, optics, and engineering, the company has continuously contributed to scientific advancement and industrial innovation across multiple sectors.

The company Hawksley and Sons was founded in 1869 by Charles Hawksley, in Oxford Street London. The talented founder invented Haemocytometer of his own design. The firm became was one of the of the founding members of the British Surgical Trade Association (today BHTA). It was focused on the Blood counting chambers, and early Blood Pressure devices. William Baum took over the company in 1916. In the post-war years the firm started to produce centrifuges.  

The Partnership of P.I. Makhin and Co. In Moscow (Товарищество П. И. Махин и Ко. В Москве) was engaged in the sale and repair of medical equipment. Founded: 1868. Dissolved: 1918 (?). Address: Rozhdestvenska Street, near Kuznetsky Most, House of Suzdal Podvor'e No. 7. Awardswith medal depicted in the 1914 catalog: Silver Medal of the Nizhny Novgorod Fair in 1895; Gold Medal of the Exhibition in Paris 1900; Diploma of Honor Paris 1904. Supplier of the instruments of Collin and Mathieu in Russia