Calendar: 1871-1872 Page 544

544 applied sciences urbcutng SECOND YEAR Is measuring base line how would you manage if river came in your way and how if wood or large home- stead In any triangle ACB being the vertex and Β the the base the angles at and and the base Β being known what is the field check usually adopted and what the office check Given gore of land lying between two townships the angle of the vertex being 30 degrees it is required to lay off an isosceles triangle of 200 acres Required the formula for reducing base measured on an elevated plane to that of the level of the sea Convert the following magnetic bearings to their corre- spending true bearings the variation being 22 15' 45 27 45 89" 26 24 Given any instrument divided into 20 minutes how would you arrange the vernier to be able to read off to 20 seconds Convert 40 acres roods and 24 poles Irish to statute English measure What is the ratio of 24 acres roods ana 10 poles statute English to 24 acres roods and 10 poles Lancashire measure Given three sides of triangle ABC AC 000 yards CB 400 yards AB 020 yards and point outside the triangle and on the side of AB making the angles ADC 30 and CDU 34 28 required the distances AD DC and DB and state what is the practical check adopted in working out the calculation FIRST YEAR Di scribe the theodolite and explain the principle of repe- tition