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CHAPTER IDRAWING INSTRUMENTS
62 other sections not shown
adjustment American Railway Engineering Architect's Scale Beam Compass bevels blade blueprints border lines carbon paper celluloid Chapter circles CIRCUIT clippings Codex Committee of Records Conventional Signs cross-section paper desired diameter dimensions dividers drafting draftsman drawing board drawing paper drawn Engineer's Scale Erasing Shield fastened freehand GRAPHIC CHARTS guide lines holes horizontal inch india ink irregular curve Kind of Paper kinks left-hand length Lettering Pen Mach mark material method moved needle-point nibs obtained oilstone Parallel Ruler pencil perpendicular piece placed position proper protractor Railway Engineering Association Records and Accounts removed rubbed ruling pen screw Section Liner sheet shellac shown in Fig side Signals and Interlocking Signs from Committee spacing Spring Bow steel straight edge string Switch T-square templet Thin Heavy thumb tacks tracing cloth tracing paper TRACK TRACK CIRCUIT triangle vertical file whiteprint width wire