The study of Italian scientific-historical objects has been neglected ./Or years. This is the reason .why important documents concerning these ob-jects have been lost or dispersed. So, cataloguing scientific instruments is important not only as a way which allows the identification of the object and the reconstruction of its history but also as an important moment of tutelage and preservation of a cultural heritage. It is necessary to compare the newly proposed catalographic methods with ones already used for artistical, archaelogical and architectonical objects. On the other hand, it is essential to consider the inforrnatic technology, thanks to which we can offer an immediate and easy access to scientific data and their cultural wider range diffusion.
