Material:This ,accurate and light weight A3 technical drawing and drafting board is made of premium high-impact plastic,with approx. Size: 51cm x 36.5cm/20.1" x 14.4".
T- and Triangle:The T- straightedge slides up and down on a plastic runner,and maintains a nice 90¡ã 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 on the T-, 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 just a bit for a comfortable working position.
Scale Unit:T- straightedge,rotating ruler,triangle and the scale clamp are all with 'CM' scale unit.1cm=0.3937inch.