ISO-9177-1 › Complete Document History
Mechanical pencils for technical drawings - Part 1: Classification, dimensions, performance requirements and testing

Complete Current Edition:
   3RD EDITION - Part 1: Classification, dimensions, performance requirements - Oct. 1, 2016

Obsolete Revision Information:
   2ND EDITION - Part 1: Classification, dimensions, performance requirements and testing - Nov. 15, 2011
   1ST EDITION - Part 1: Classification, dimensions, performance requirements - March 15, 1989