212 73. Automotive Diesel Repair and" Service. A continuation of Automotive Diesel Repair and Service No. 72. Three quarter hours. 74. Automotive Diesel Repair and Service, A continuation of Automotive Diesel Repair and Service No. 73. Three quarter hours. 75. Automotive Diesel Repair and Service. A continuation of Automotive Diesel Repair and Service No. 74. Three quarter hours. 76. Automotive Diesel Repair and Service. A continuation of Automotive Diesel Repair and Service No. 75. Three quarter hours. DRAFTING 21. Industrial Drafting. (Blueprint Reading and Sketching.) A course designed to teach basic principles of sketching and blueprint interpretation as applied to industrial practices; to include lettering, visualization of objects, use of scale, and freehand sketching and drawing. Two quarter hours. Autumn. Best 22. Industrial Drafting. (Basic Mechanical Drawing.) Basic drawing operations to include, visualization of size and shape, lettering, use and care of instruments, drawing to scale, geometrical principles, multiview drawings, and dimensioning. Three quarter hours. Autumn. Best 23-AJB. Industrial Drafting. (Basic Mechanical Drawing continued.) To include lettering sectional, primary, auxiliary, pictorial revolutions, intersections and developments, threads, springs, fasteners, detail, and assembly drawings, 2.5 quarter hours. Winter. Best 24-A.B. Industrial Drafting. (Basic Mechanical Drawing continued.) To include common symbols of trade and industry, conventional methods of representation, clearance, tolerance, fir, and graphic representation, drawings of gearing, cams, power transmission devices, electrical and pipe circuits, welding symbols, and use of reference materials. 2.5 quarter hours. Spring. Best 32-A.B. Industrial Drafting. (Elementary Design,) A course to introduce basic mechanical design principles. Prerequisite: Drawing 23 or equivalent. Elements of design will apply geometrical principles, and operations learned in previous drawing courses. Specification of materials, drawing notes, use of commercial mechanical drawing devices are included. 2.5 quarter hours. Autumn. Best 33-A.B. Industrial Drafting. (Jig and Fixture Design.) An elementary course in design as applied to small projects using clamping, drilling, brushing, gauging, forming, cutting, milling, welding, sawing, and shaping devices. Drawings include multiview, sectional, auxiliary, pictorial, shop, and working drawings to scale. 2.5 quarter hours. Winter. Best 213 34-A.B. Industrial Drafting. (Tool and Die Design.) A course in design including the planning and designing of small units involving surface layout, bending, folding, blanking, drawing, piercing, threading, and boring tools or keyes. The related information includes steel hardening, clearances, and basic principles of pattern making and metal shrinkage. 2.5 quarter hours. Spring. Best 41. Industrial Drafting. Fundamentals of projection and the development of lines, surfaces, angles between planes, intersections 21, 22, and 23. Three quarter hours. Spring. Best 42. Industrial Drafting. (Industry.) A course to provide related information for design courses. Includes information on: properties, strength workability, and weight of available industrial products. Three quarter hours. Autumn. Best 91. Mechanical Drawing and Print Reading. The use of instruments, types of lettering, and graphic solutions, lines and symbols. The drawing of orthographic projections, sections, auxiliary views, revolutions and size, shape descriptions; isometric drawings and the translation of orthographic into pictorial drawings. Two quarter hours. Autumn, Winter, Spring. Best 92. Drafting. Introduction to mechanical drawing. Use of instruments, lettering, lines and symbols, graphic solutions, multiview projection, and dimensioning. Two quarter hours. Autumn, Winter, Spring. Best 93. Drafting. Continuation of Drawing 92 and includes: sections, auxiliary views, pictorial views, revolutions, intersections and developments. Two quarter hours. Autumn, Winter, Spring. Best 94. Drafting. Continuation of Drawing 93 and includes: threads, springs, fasteners, riveting, welding symbols, pipe symbols, electrical symbols and layout, cams, and gears. Two quarter hours. Autumn, Winter Spring. Best 95. Plans and Specifications. Completion of wall sections and floor plans. Blueprint reading. Prerequisite: Drafting 94. Two quarter hours. Autumn. , Best 98. Plans and Specifications. Completion of floor plans and elevations for building. Prerequisite: Drawing 95. Two quarter hours. Winter. Best 97. Plans and Specifications. Completion of building detail drawings. Stair details, structural, fireplace, entrance and other details of construction. All symbols of construction and fixtures are studied and used. Prerequisite: Drawing 96. Two quarter hours. Best