Question

After subjecting the EDM systems to the meteorological corrections, the possible accuracy range expected in short range and long range EDM systems respectively is

• A. 0.15 mm to 1 mm and 0.5 mm to 1.5 mm
• B. 1.5 mm to 10 mm and 5 mm to 15 mm
• C. 15 mm to 100 mm and 50 mm to 150 mm
• D. 150 mm to 1000 mm and 500 mm to 1500 mm

Hint:

After applying atmospheric corrections, short-range EDM is accurate up to 10 mm, and long-range EDM up to 15 mm.

Answer 1

The Correct Option is B

Electronic Distance Measurement (EDM) systems are affected by atmospheric conditions, particularly temperature, pressure, and humidity. When proper meteorological corrections are applied, short-range EDM instruments can achieve an accuracy of approximately 1.5 mm to 10 mm. For long-range systems, where atmospheric effects are more pronounced, the achievable accuracy ranges from 5 mm to 15 mm.