DIN 4000-152
DIN 4000-152 Tabular layouts of properties - Part 152: Wrenches - Engineers wrenches, box wrenches, hook wrenches, pin wrenches
standard by Deutsches Institut Fur Normung E.V. (German National Standard), 11/01/2006
standard by Deutsches Institut Fur Normung E.V. (German National Standard), 11/01/2006