What is precision of an instrument?
Q1: The precision of an instrument is a measure of how precisely it shows a measured value. On a related note, the accuracy of an instrument is a measure of how well its records match reality. Precision is not the same as accuracy. Q2: ? It depends on what you are describing. Both measures are useful in different ways – if I’m driving a heavy truck over a weak bridge, the bridge sign isn’t going to tell me what is the maximum volume it can take.
