Ce livre est une description d taill e de l'instrument de mesure appel Tubet, invent par l'auteur. Il s'adresse aux scientifiques et aux techniciens int ress s par cet instrument. This work has been selected by scholars as being culturally important, and is part of the knowledge base of civilization as we know it. This work is in the "public domain in the United States of America, and possibly other nations. Within the United States,...