Zehntner ZSH 2290, Инструкция по эксплуатации

Страница: 10 / 16

Page 10
5 Preliminaries
5.1 Pencil preparation
•
Carefully remove the wooden mantle with the sharpener on a length of
approximately 5-6 mm. Make sure not to damage the lead. The remaining
wood can be removed by a fingernail.
•
Rub the lead against the emery paper (No. 400) maintaining an exact angle of
90° to the paper until a flat circular surface is obtained at the tip of the lead.
•
Repeat this procedure after each test.
Always sharpen the pencils and trim the leads as specified in the standards
you use.