What is essential when the resistance range setting of an analog meter is changed?

When changing the resistance range setting of an analog meter, recalibrating the meter is essential to ensure accurate measurements. Analog meters rely on a specific calibration for each range they are set to; if the range is altered, the internal scaling and reference values must be adjusted accordingly. This recalibration helps account for the inherent characteristics of the circuit being tested and the precision required for the specific resistance values being measured.

It is crucial to recalibrate to avoid errors that could arise from using a range that is not properly set for the resistance being measured. Without proper recalibration, the readings might be misleading or entirely incorrect, leading to faulty diagnoses or test results.