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Use and Care op Instruments
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alphabet angle Architect's Scale assigned object auxiliary view axes axis barograph bolt called cavalier projection center lines chapter circle construction contour lines coordinate lines cube curve cutting plane cylinder diagram diameter dimension lines dimetric distance draftsman drawing sheet drawn drill edge ellipse engineer Engineer's Scale Figure gage given graphical guide lines height holes horizontal hyperbola inch indicated intersection isometric drawing isometric projection length letters machine drawing method necessary nomograph notes object from Figs oblique projection Omit dimensions orthographic projection oval paper parallel pencil perpendicular perspective picture plane piece placed plane of projection plate point of sight practice projecting lines proper radius represent rivet rule scale screws section lining sectional views shape shown in Fig side simply sketch space standard steel straight lines stroke structure surface symbols T-square tangent thread tion triangle trimetric projection truss vanishing point vertical width