A Manual of Engineering Drawing for Students and Draftsmen: By Thomas E. French ... |
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Page 396
... tracing cloth by rubbing with a pencil eraser . A triangle should be slipped under the tracing to give a harder surface . The rubbed surface should afterward be burnished with an ivory or bone burnisher , or with a piece of talc ...
... tracing cloth by rubbing with a pencil eraser . A triangle should be slipped under the tracing to give a harder surface . The rubbed surface should afterward be burnished with an ivory or bone burnisher , or with a piece of talc ...
Page 397
... tracing . 327. Blue Printing . The simplest of the printing processes is blue printing , made by exposing a piece of sensitized paper in contact with the tracing to sunlight or electric light in a printing frame made for the purpose ...
... tracing . 327. Blue Printing . The simplest of the printing processes is blue printing , made by exposing a piece of sensitized paper in contact with the tracing to sunlight or electric light in a printing frame made for the purpose ...
Page 419
... tracing paper over the original and trace the outline carefully . Turn the tracing over and retrace the outline just as carefully on the other side , using a medium soft pencil with a sharp point . Turn back to first position and tack ...
... tracing paper over the original and trace the outline carefully . Turn the tracing over and retrace the outline just as carefully on the other side , using a medium soft pencil with a sharp point . Turn back to first position and tack ...
Common terms and phrases
angle appearance axis base bolts called casting center line chapter chart Check circle complete cone connection construction curve detail detail drawings developed diameter dimensions distance divided drawing drawn Drill edge elevation engineering equal face Figure finished floor give given ground Group head height Holes horizontal illustrated inch inclined indicated intersection isometric length letters light machine mark material measuring method necessary notes object parallel pencil perpendicular perspective picture piece pipe pitch plane plate position practice problems projection radius reading reference represented rule scale screw shade shaft shape sheet shown shown in Fig side sizes sketch sometimes space square standard Steel stroke structure surface symbols tangent thread tracing triangle true usually vertical width