Calendar: 1891-1892 Page 845
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ENGINEERING DEPARTMENT clvii How is Contour Survey carried out in the Field and afterwards plotted Make sketches explanatory of the construction and adjustments of the Theodolite What is meant by the Variation of the needle Describe it is determined the Box Sextant and the Make sketches to expl Prismatic Compass Vernier is required to read to minutes when applied to scale that is graduated to degrees Describe by sketch how this is arranged Complete and check the following page of levelling Field Book Back Inter Fore Rise Fall Height above Base 4-60 100Ό0 3-20 4-60 5-80 6-90 80 tit 40 8-90 point on road which has gradient of in 100 has Reduced Level of 57 80 What are the at chains at mile and at 100 chains from this point measured along the Datum Line
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