José Grasselli was one of the founders of the establishment Grasselli y Zambra (c. 1840), reputed as one of the first shops in Spain to specialise in the production and distribution of precision instruments. Its offer covered a wide range of disciplines, from optics, physics and mathematics to geodesy, mineralogy, astronomy and surveyance. After 1864, José Grasselli continued to carry on the business independently.
José Grasselli was one of the founders of the establishment Grasselli y Zambra (c. 1840), reputed as one of the first shops in Spain to specialise in the production and distribution of precision instruments. Its offer covered a wide range of disciplines, from optics, physics and mathematics to geodesy, mineralogy, astronomy and surveyance. After 1864, José Grasselli continued to carry on the business independently.