Calendar: 1878-1879 Page 627

APPLIED SCIENCES 625 The arc of the theodolite being graduated to 20 minutes it is required to construct vernier to read to 20 seconds How is this to be done FIRST YEAR What is meant by 20 and 30 scale Describe an offset scale In running base line how would you overcome the follow- ing obstacles tree-a house-and river How many distinct and independent motions are there in the theodolite What are they and what mechanical contri- vances have we for controlling them Describe the spirit level staves Describe the circumferentor rectangular field is 6Ί5 chains longer than it is wide it contains 33 acres How many square yards will there be in 14 foot path all round it inside The periphery of circular field is 36 chains required its area in acres roods and poles What is to be understood by traversing with the theodolite and what by repeating the angle What is the mean angle when the first angle is 272 23' the second 184 45 and the third 97 10 The theodolite being placed at describe the mode of taking an angle ABC and of repeating it VIII rW of Construction -All Drawings to be hand sketches to scale State the theory of lime mortar The same of hydraulic concrete The same of stone preservatives Describe pig iron foundry and forge State the particular uses of cast iron and rolled sb Za Explain tbe formula -f β