GOCHANGE Drawing Board, A3 Drawing Tool Set Multi-Funtion Drawing Board Table Graphic Architectural Drawing Board With Clear Rule Parallel Motion And Adjustable Measuring System Angle GOCHANGE DRAWING BOARD: This Is a complete A3 Drawing Board Work Station with a parallel motion which slides in a Groove, locking into place with finger buttons at either end. Made of high quality plastic, lightweight and durable. Size: 51cm x 36.5cm/20.1" x 14.4". PRACTICABILITY: Fashion, Creative, Ergonomic designed Drawing Board. It is a very useful accessory to practice your drawing skills, It is a helpful tool for designer, also as a great gift. T-SQUARE AND TRIANGLE:The T-square straightedge slides up and down on a plastic runner,and maintains a nice 90 angle and can be locked into position on both sides of the board so that it doesn't move at all when you want it stable.With 12cm rotating ruler and 12cm triangle with angle attachment slide in a groove on the T-square, making it very easy to move back and forth. PAPER LOCATOR AND TILT ANGLE FEET: There are paper clips on both sides of the board and with scale clamp on the bottom,to make you draw up your plans very nicely.There's also a couple of feet you can attached to the back that elevates the back of the the board. It's features is easy and comfortable working position. PACKAGE LIST: Set Square, 2x Clamps, 1x Protractor, 2 Anti Slip Support Legs, 1x Sliding Ruler All parts in picture included High quality but low price product brings you a pleasant purchase experience, fast shipping, quality warranty, 24H online service, please feel free to buy, it is our aim to make the products satisfactory to our customers