in Chaining, Corrections. 3. Chain Surveying – Chain triangulation, Survey stn., lines, locating ground features, field work, instruments for setting out basic problems in chaining, obstacles in chaining Module –II (10 Hrs) 4. Compass Surveying – Principles use of Prismatic Compass, Measurement of bearings, Conversion of bearings, Local attraction, Correction of compass traverse. 5. Plane Table Survey- Principles, Advantages and disadvantages, Equipment, Accessories and their uses. Methods of plane table survey. Two point and three point problems. Module –III (10 Hrs) 6. Levelling- Types of levelling and their uses, Permanent adjustment, Curvature and refraction effects. 7. Contouring-Characteristics and uses of contours. Methods of contouring. Module –IV (10 Hrs) 8. Theodolite Survey – Application in Height and distance measurements. Permanent adjustment of transit theodolite, methods of repetitions and reiterations. 9. Curve Setting – Simple circular curve setting by chain, tape & theodolite 10. Minor Survey Instruments – Box-sextant, Planimeter, Pantagraph, their working principles and uses.