TERMS1. Stadia System - In this systems staff intercepts, at a pair ofstadia hairs present at diaphragm, are considered.2. Tangential System - In this method, readings at two different points on a staff are taken against the horizontal cross hair and corresponding vertical angles are noted.3. Subtense bar System - In this method, a bar of fixed length, called a subtense bar is placed in horizontal position. The angle subtended by two target points, corresponding to a fixed distance on the subtense bar, at the instrument station is measured. The horizontal distance between the subtense bar and the instrument is computed from the known distance between the targets and the measured horizontal angle.4. Wedge Optic r !uble "mage system a specially designed theodolite used in conunction with the measuring device placed infront of the telescope, directed to a special staff and a set of measurements can be made for distance calculations.#. E!M System !"# tools or Total $tationis used to observe to details of where the stake %pole& e'uipped with prism in use for the target.$RO%E!&REa& (ertical )ontroli& *egs area planning was marked as a work station."istance between every station more than +, m.ii& -evelling e'uipment was set up between station . and / forget theback sight reading.iii& 0fter that, the front sight and transfer to another station was get until the last point marks.b& 1orizontal controli& *egs area planning was marked as a work station. "istance between every stationmore than +, m.ii& Theodolite was set up and get back bearing /-. using prismatic compass at station /.iii& $et up back bearing at left handle and observe at station +.2epeat same step but using right handle. 3sed theodolite to record data.iv& Theodolite and bearing was set up at station +.1old the bearing +-/ and un14-" to observe station 5. 2epeat same step but use right handle.v& *rocedure was repeated until end.c&"etails $urveyi& $tation .,/ and + as control station.ii& The staff was held at point a,b,c,d and e.iii& 0ngle a. and a/ is an angle from references direction to pint staff hold. 6herethe bearing set up there must bereference direction.iv& Theodolite was set up at station. 0ssume station / s begin station.#easure heightof instrument from pegs.v& The angle from station + to staff was get and repeat same procedure to get theangle.vi& 4bservedthestadiareadingfromthestaff,upper reading,middlereadingandlower reading.vii& The staff was transferred to another station where the details must be taken.viii& 7or measure the angle horizontal angle,staff reading and vertical angle readingrepeat the same step at %i&.ix& Transferthestafftonext point.Theobservemust becompleteuntil theentiredetails plan taken.