Calendar: 1872-1873 Page 555

556 APPLIED SCIENCES 24 18 being at distance of 21 miles and the other of 12 36 at the distance of 14 miles which the higher and by how ninch Construct Vernier to read to seconds when the arc is divided into minutes FIRST YEAR Describe the various parts of the theodolite and the mode of using it What is the usual field check adopted to secure accuracy and give an example the first angle being 124 35' Describe the circumferentor and when and how it is used Describe the spirit level and levelling staves rectangular field is ch 25 Iks longer than it is wide it contains 25j acres How many square yards will there be in 10 ft path all round inside How many acres will there be in triangular field whose sides are 300 400 and 200 yards 0ItB conutn EIRST YEAR Show the plan of regular hexagon 1" side when its plane is inclined at 40 Determine the plan and elevation of line 3" long inclined at 20 contained by lane inclined at 30 right pyramid 3" high the base of which is hexagon inscribed in circle 3" diameter is cut by plane inclined at 40" to the axis and passing through its centre show the plan and the true form of the section The veriical trace of plane is line making an angle of 30 with xy and the plane itself is inclined at 40 show its horizontal trace Two indefinite lines on the horizontal plane meet each other in point and contain an angle of 80 the plan of the lines is required when one is inclined at 35 the other at 47