Product details:
The Martin pro-draft parallel straightedge kit is the premier item in its class. The only Parallel Straightedge Board utilizing an Anti-warp Aluminum body straightedge for strength, and stability. Each side of the unit has large knobs for adjusting the straight-edge to align with the artwork/drawing and stay parallel. Equipped with a 6-position Adjustable stand Board size 23-inch by 31-inch.