A more thorough explanation:

Definition: Winchester measure is a set of standard weights and measures that were originally kept at Winchester in England.

Example: In the past, merchants and traders used the Winchester measure to ensure that they were using the same weights and measures as everyone else. For example, a pound of flour in Winchester measure was equal to 16 ounces, and a gallon of liquid was equal to 8 pints.

Explanation: The example shows how the Winchester measure was used to standardize weights and measures in England. By using the same measurements, merchants and traders could ensure that they were getting a fair deal and that their goods were being sold at the correct weight or volume.