Open AccessA DISCUSSION ON THE LAYOUT OF ELEMENTS ON A CONTROL PANEL
Author(s) -
J.R. Beeler
Publication year - 1955
Language(s) - English
Resource type - Reports
DOI - 10.2172/4341706
Subject(s) - icosahedral symmetry , surface (topology) , hexagonal crystal system , curved mirror , geometry , optics , perimeter , cover (algebra) , mathematics , physics , crystallography , engineering , chemistry , mechanical engineering