A standard form of measurement is one where there is widespread agreement as to its value. A non-standard measurement is one which makes sense to only a small number of people. For example, "as big as my garden" will only make sense to people who know me (or can Google my address).
Chat with our AI personalities
Actually, about 3 countries use non-standard measurements - the SI is the international standard.
We need standard measurements because it helps us to find the measurements of things.
nonstandard and standard measurements...
Five times my [hand] span. Tall as my house. As big as my dog. As fast as I can run. As quiet as a mouse.
SI units