26 DRAFTING ROOM EQUIPMENT FOR INDUSTRIAL, ARCHITECTURAL, AND SCHOOL USE-NAMELY, DRAFTING TABLES, ENGINEERS' DESKS, FILING CABINETS FOR DRAWINGS, FILING TRAYS FOR DRAWINGS, FILING DRAWERS FOR DRAWINGS, DRAFTING CHAIRS AND STOOLS, DRAWING BOARDS, LIGHTED TRACING AND OPAQUING TABLES, PORTABLE LIGHTED TRACING AND OPAQUING BOARDS, AND ROLL TRACING FILES