DRAWING— MECHANICAL 



1916 



Saturday 



9:00 a.m. Two hours 



1. Draw accurately the figures for the following constructions, and in each case 



indicate clearly on the figure or explain briefly the method used : 



a) To draw two intersecting lines making with each other an angle equal to that 



formed by two given intersecting lines. Draw at random any two inter- 

 secting lines forming an angle ABC, with the side BC horizontal. Else- 

 where on the paper lay off an angle A'B'C equal to ABC, with the 

 side B'C (drawn at random) inclined at any unknown angle to the 

 horizontal. 



b) To draw a tangent to a circle from a point outside the circle by geotnetric 



construction. 



c) To divide a right angle into six equal parts, using only the triangles and 



T-square. 



2. Draw a parabola passing through the ends of a vertical line 3i inches long 



and having for its vertex a point distant 2 inches horizontally from the 

 middle point of the line. 



The top, front, and end views (horizontal, vertical, and profile projections) of 

 a box are shown above, drawn to full scale (or actual size). 



a) Does the hole in the top face extend through the face into the interior of the 



box ? If not, how deep is it ? 



b) Answer the same cjuestion as to the hole in the right-hand end. 



c) What are the dimensions of the groove in the bottom ? 



d) What are the dimensions of the cleat inside the box at the left-hand side ? 



8o 



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