CST Level 1 Land Surveyor Certification Practice

What are direct measurements?

1. Measurements inferred from analysis

2. Physical measurements taken with instruments

3. Measurements made from satellite data

4. Measurements based on estimations

The correct answer is: Physical measurements taken with instruments

Direct measurements refer to physical measurements taken with instruments, which provide quantitative values obtained from the immediate observation of physical properties. This method involves using tools such as tape measures, theodolites, or total stations to gather data directly from the environment, ensuring accuracy and precision. This contrasts with inferred measurements, which are based on analysis rather than direct observation, and estimations that rely on approximations rather than exact values. Measurements made from satellite data also do not qualify as direct measurements since they involve remote sensing techniques and often require post-processing or interpretation to derive values associated with ground conditions. Thus, the definition of direct measurements precisely aligns with the choice that describes them as physical measurements obtained through instruments.