Thank you for viewing. This is an A2 size aluminum drafting board with a sliding ruler. - Model Name: Mars Liner 960 A2 - Size: A2 - Material: Aluminum - Features: Sliding ruler My daughter, who was in university, purchased this in March 2022 for creating assignments. She used it at home three times for assignments, but no longer needs it as she has graduated. I believe it has hardly been used. Thank you for your consideration.