CHAPTER 2. CONNECTION AND PREPARATION
2-13
CH 2. CONNECTION AND PREPARATION
CH 2. CONNECTION AND PREPARATION
Appendix A. Standard Specifications
Appendix A. Standard Specifications
2.6
Mounting a ballpoint pen
Acceptable ballpoint pens
The ballpoint pen holder accepts the following pen types:
(1) Cylindrical ballpoint pens: Up to 8.5 mm in diameter
(2) Hexagonal ballpoint pens: Up to 7.5 mm side-to-side
(3) The tips of both pen types must extend between 3 and 3.5 mm past the ballpoint pen holder's
opening.
Hexagonal
ballpoint pen
Cylindrical
ballpoint pen
Ballpoint
pen holder
Thumb screw
Pen tip
3 to 3.5mm
7.5mm
φ
8.5mm