A standard unit of measurement is the unit (size or quantity) that is agreed upon in that nation or trading partnership.
In science the standard units of measurement are called SI units. (An international standard). This is the metric system.
We need standard measurements because it helps us to find the measurements of things.
nonstandard and standard measurements...
You should convert metric measurements to standard US measurements when you need to communicate with someone who is more familiar with the US system, or if the specific context or requirements you are dealing with call for the use of standard US measurements.
Standard measurements can be useful for having a set scale that all objects can be measured by. It allows for a common standard by which to judge objects.
The standard measurements for a coffee cup are typically around 8 to 12 ounces in capacity.
The standard measurements for a coffee urn typically range from 30 to 100 cups in capacity.
Tes, the end standard is easy for alignment with the axis of measurements.
SI units
A standard 2x4 piece of lumber is typically 38mm x 89mm in metric measurements.
I believe that standard measurements for a Euro Sham are 26" x 26".
Standard bar measurements for drinks typically include 1.5 ounces for a shot, 1 ounce for a standard cocktail pour, and 0.5 ounces for a dash or splash. These measurements may vary depending on the specific drink recipe or establishment.
The standard bike tube measurements for a road bike are typically 700c in diameter and 23-28mm in width.