A roller ball has two advantages over a ball point: first, less pressure needs to be applied to the pen to have it write cleanly: this permits holding the pen with less stress on the hand.
This permits holding the pen with less stress on the hand. A roller ball has two advantages over a ball point: first, less pressure needs to be applied to the pen to have it write cleanly.
A roller ball has two advantages over a ball point: first, less pressure needs to be applied to the pen to have it write cleanly. This permits holding the pen with less stress on the hand.
A roller ball has two advantages over a ball point: first, less pressure needs to be applied to the pen to have it write cleanly. This permits holding the pen with less stress on the hand.