Extracted text: A 1" reading theodolite having a multiplying constant of 100 and an additive constant of 0 was centred and levelled a height of 1.48m above a point C of reduced level 46.87 A levelling staff was held vertically at points D and L in turn and the readings shown in the table below were taken Calculate (i)the reduced levels of points D and L (ii) the horizontal length of DL Staff Staff Readings (m) Vertical circle readings Horizontal circle readings D 3.240, 3.047, 2.853 87° 38' 53" 56° 49' 31" 2.458, 2.230, 2.002 92° 21' 36" 98° 07' 18" 32