【Drapas Draughting Board A2 Parallel Ruler Liner Board DXM-600 with Case】 The case is dirty and somewhat sticky. Regarding operation, the ruler moves up and down, but feels loose. I'm not sure if it's related to the screws. It belonged to my father, and I don't have the knowledge to know if this is normal operation, so I'm selling it as junk. 【Description】 This is an A2 parallel ruler that can be brought into architectural technician skill exam venues. 【Set Contents/Accessories】 Main unit, dedicated carrying bag 【Product Name】(Parallel Ruler) Draupus Board DXM-600 with parallel ruler carrying bag 【Parallel Ruler Specifications】 External Size: 505 x 685mm Drawing Area: 426 x 600mm Main Unit Weight: 3.0kg 【Features】 ・The left and right independent floating device allows you to adjust the floating by simply turning the screws (up to 2mm). ・The tilt angle can be selected in 3 stages (0 degrees, 6 degrees, 9 degrees).