| Particulars | Specifications |
|---|---|
| Purpose | Establishment of control points for detail surveying |
| Unit of Measurement | Linear Measurement: Meters Angular Measurement: Grades |
| Instrument and Method | Linear Measurement: Total Station Angular Measurement: Total Station |
| Linear Measurement Direction | Two-way, Double Measurement |
| No of sets for Angular Measurement | Three sets |
| Value of RO for Various Sets | 0g, 67g, 133g |
| Horizon Closure Required | Yes |
| Permissible Collimation Error (Face to Face Tolerance) |
2cg |
| Permissible Index Error | 5cg |
| Set to Set Tolerance | 60ccg |
| Required Accuracy on Horizontal Angles | 75√𝑁 | Adjustment Methods | Linear Misclosure: Bowditch rule
Angular Misclosure: Equal shift |
| Co-ordinate System | WGS 1984 UTM zone 45 N |
| Maximum to minimum leg length ratio | 3:1 |