Calendar: 1880-1881 Page 675

APPLIED SCIENCES 675 FIRST YEAR Explain what is meant by plain scale 1g full size" and draw the scale to show 20 feet Describe briefly the principle on which diagonal scale is constructed and illustrate by the division of one inch into 21 equal parts Explain the use of the polygon scale on the sector On one side of line 25 long construct an equilatera triangle and square on the other side regular pentagon and hexagon Show by construction V3 the unit being 1" Print in Egyptian or Roman capitals66 Problems attempted Nos &c as separate exercise Explain the terms projections of point iC traces of line "traces of plane and illustrate each description Show plan and elevation of circle 2" diameter when its plane is inclined at 70 square of י" edge lies in plane inclined at 50 one edge of the square is inclined at 35 plan and elevation required 10 Show the projections of right cone 25 base 3" high and third projection on any plane inclined at 45 to the elevation of the axis 11 The elevation of line is two inches in length while the actual line is three inches long what must be the plan of it 12 Required the plan and elevation of regular octahedron 125 edge any position 13 Show the projections of cube of 25 edge when one diagonal of the solid is vertical VII -Eanti &urbtgtng antt IUbtiling THIRD YEAR Note -Bidder's tables may be used Describe the dumpy level Define backset foreset intermediate υ υ