What are examples of indirect measuring tools?

Indirect measuring tools include devices such as laser rangefinders, which calculate distances by measuring the time it takes for a laser beam to bounce back, and theodolites, which measure angles to determine heights and distances indirectly. Other examples are GPS devices that provide location data through satellite signals and clinometers, which assess the slope or angle of an object without direct measurement. These tools are valuable in fields like surveying, construction, and navigation.