Bulletin de la Societe de l.Industrie Minerale, 1880, Vol. 9 (Classic Reprint) 12+

📕 Excerpt from Bulletin de la Société de l'Industrie Minérale, 1880, Vol. 9Leur mécanisme est d'une extrême simplicité tout se réduit a un systéme rotatif invariable, tournant sur deux paliers, si l'axe est horizontal, sur une crapaudine et un collier, si l'axe est vertical.About the PublisherForgotten Books publishes hundreds of thousands of rare and classic books. Find more at www.forgottenbooks.comThis book is a reproduction of an important historical work. Forgotten Books uses state-of-the-art technology to digitally reconstruct the work, preserving the original format whilst repairing imperfections present in the aged copy. In rare cases, an imperfection in the original, such as a blemish or missing page, may be replicated in our edition. We do, however, repair the vast majority of imperfections successfully; any imperfections that remain are intentionally left to preserve the state of such historical works.