12.15.1. Instrument Accuracy

Try these first

1. 1.

   What is the typical angle measurement accuracy range for Total Stations?

   Hint

   Think about the smallest units we often measure angles in.

2. 2.

   Define prism-based distance measurement accuracy.

   Hint

   Consider how errors are calculated when using prisms.

3. 3.

   What is the typical angle measurement accuracy for Total Stations?

   • ±2” to ±5”
   • ±1” to ±5”
   • ±3” to ±5”

   Hint

   This range is crucial for high precision in measurements.

4. 4.

   True or false: Reflectorless distance measurements are generally more accurate than prism-based measurements.

   • True
   • False

   Hint

   Consider how reflections impact measurement accuracy.

5. 5.

   A surveyor measures an angle at ±3” using a Total Station and achieves a distance accuracy of ±(2 mm + 2 ppm) for a 2000 m distance. Calculate the potential error in distance measurement.

   Hint

   Ensure you apply the ppm correctly for the measurement range.

6. 6.

   Design a brief plan for ensuring your surveying equipment meets ISO standards before starting a project. Include specific checks and procedures.

   Hint

   Consider what checks need to be in place consistently.