Reproduction

Shows modern methods of reproducing drawings on metal, including photographic, X-ray, and electro-chemical processes. Uses of T-Square & Triangles. (11 min) 16sd. Purdue U. Shows placing of drawings on drawing board; handling T-square, triangles and pencil; drawing horizontal, vertical and inclined lines with T-square and triangle. Drawing of perpendicular and parallel lines using triangles, and the construction of angles. Visualizing an Object. (9 min) 16sd-$13.52. USOE-Castle. OE51. Shows the development of a blueprint, dimensioning by different views, use of various kinds of lines, and methods of indicating special information on blueprints.