Mechanical Drawing |
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3d angle 4H pencil angle of 30 angle of 45 arcs cutting ARMOUR INSTITUTE auxiliary view bill of material Bisect blue print border line center line cone Conic Sections Construct cutting plane cylinder describe arcs descriptive geometry diameter distance Divide divisions draftsman draw arc draw lines draw the curve draw the development Draw the projections edge elevation and plan ellipse end view erect a perpendicular figure finished FREEHAND LETTERING geometry given line H projection hyperbola isometric drawing isometrical projection Join left-hand line of intersection lines parallel linseed oil long dash machine Mechanical Drawing number of equal oblique orthographic projection parabola pencil drawing planes of projection point of intersection PROB problem projecting planes radii radius revolved right angles right cylinder right-hand scale screw semicircle shade lines shadow shown in Fig square straight lines surface T-square tangent triangle vertical projection
Popular passages
Page 170 - AC should be, for this plate, 1^" long. Produce AC to B. From C as center, with a radius equal to CA, describe the semicircle A 128456 7 B, and divide it into as many equal parts as there are sides in the required polygon (in this case eight).
Page 168 - A with the same radius describe arc BD. From B with AC as radius cut arc BD in D. Draw CD. Line CD is parallel to AB. FIG. 23.
Page 41 - The circumference of every circle is supposed to be divided into 360 equal parts, called degrees ; and each degree into 60 equal parts, called minutes ; and each minute into 60 equal parts, called seconds ; and these into thirds, etc.
Page 40 - A circle is a plane figure bounded by a curved line, every point of which is equally distant from a point within called the center. The curve which bounds the circle is called the circumference Any portion of the circumference is called an arc.
Page 39 - A PLANE is a surface, such, that if any two of its points be joined by a straight line, such.
Page 170 - AB of the circle into as many equal parts as the polygon is to have sides. With the points A and B as centers and radius AB, describe arcs cutting each other at C.