A3 Drawing Board Drafting Table with Parallel Motion and Adjustable Angle Precise Marks Ruler

Description: 1. A complete set for drawing, with ergonomic design for easy and comfortable working. 2. Robust board of unbreakable, non-warping material for durability. 3. Lubricated guide rails for smooth parallel straightedge movement, with stop-and-go locking mechanism. 4. Rapidly set square and media markings designed for aiding in accuracy. 5. Two clamp strips with central push button operation and corner clamp for easy fixing and checking the media alignment. 6. The "L" design enables you to draw along the upper-edge of the straight-edge with precisions, even at the very bottom of the drawing, no need to turn over the straight-edge. 7. Protrator with contra-rotating scale. 8. Small buttons on the left side to control the open and close to insert papers. 9. Triangle-stand for stable support, easy for measuring and drawing work. Perfect auxiliary tool for professional designer.