CST Level 1 Land Surveyor Certification Practice

In surveying, what is an example of a cumulative error?

1. Constant bias from an uncalibrated instrument

2. Random readings due to measurement fluctuations

3. Estimations made under poor visibility

4. A single measurement taken incorrectly

The correct answer is: Constant bias from an uncalibrated instrument

A cumulative error refers to the error that builds up over a series of measurements or observations, leading to a significant total error that affects the final results. In the context of surveying, constant bias from an uncalibrated instrument is a prime example of this type of error. When an instrument is not calibrated correctly, it consistently provides readings that deviate from the true value. As a result, every measurement taken with this instrument will reflect this bias, accumulating over time and leading to larger discrepancies in overall measurements. This type of error can significantly affect the accuracy of surveying data, particularly in cases where multiple measurements are required, such as in distance calculations, angles, or elevations. Therefore, recognizing the impact of an uncalibrated instrument is crucial in preventing cumulative errors in surveying practices.