Remote control gear with transmission tubing for manual operation; lengthenings for spindles of armatures with straight square
standard by Deutsches Institut Fur Normung E.V. (German National Standard), 08/01/1980

Remote control gear with transmission tube for manual operation -Lengthenings for spindles of armatures with straight square
standard by Deutsches Institut Fur Normung E.V. (German National Standard), 08/01/2017