TY - BOOK AU - U.S. Office of Education. Division of Visual Aids. TI - Sectional views and projections, finish marks CY - Produced by [the ] Division of Visual Aids, U.S. Office of Education [and ] Federal Security Agency, KW - Techanical drawings KW - Study and teaching KW - Blueprints N1 - Accurate machining depends largely on the ability of the machine shop operator to read and understand the blueprint. To learn to interpret views and projections on blueprints, the machining of the base of a swivel vice is followed in this programme ER -