The smallest value that can be measured on a measuring instrument is called the resolution of the instrument.

Here's a breakdown:

* Resolution is the smallest change in the measured quantity that the instrument can detect and display.

* It's essentially the "graininess" of the measurement.

* Example: A ruler with markings every millimeter has a resolution of 1 millimeter. It can't measure anything smaller than that.

Factors Affecting Resolution:

* Type of Instrument: Different instruments have different levels of precision.

* Scale and Markings: The spacing between markings on a scale determines the resolution.

* Digital Instruments: Digital instruments often have a fixed number of decimal places, limiting their resolution.

Important Note: The resolution is not the same as the accuracy of an instrument. Accuracy refers to how close the measured value is to the true value.

Let me know if you'd like me to provide examples of resolution for specific measuring instruments!