A special feature in the double guide rail very easy-going character dar.
Very practical, the fixation of lateral movement of the stable central web: To the left is fixed, moved to the right, sets the free-wheeling.

Other features:

• Labor-friendly scale to plate body and Parallel Ruler - ruler with parallel shifting lines.
• 7O and 42o lines.
• The plate body is made of impact-and shatter-resistant plastic and features on the back, non-slip adhesive feet.
• A unique magnetic strips are the scales on the left and lower edge dar. They are displaced and save the tapping of lines convoluted differential calculations!
• An enclosed millimeter grid foil helps to draw on transparent paper with the tapping of routes and positioning.
• The highly recommended PBX characters head is included!