This is a very basic rendering of a type of desk installed in schools in the late 19th and early 20th centuries. The legs and supports were of cast iron often cast with intricate scroll work and decorations. The seats and tops were of laminated wood and or plywood in later models. Using these desks was surprisingly comfortable compared to newer steel and plywood individual desks. They did have the drawback of unadjustable seats and tops and beign fixed in place to the floor. If the person in front of you shifted while you were writing it could mess up your penmanship. Earlier versions had a hole in the top right corner of the top for an ink well, not included in this drawing.