The universal system of scientific measurement is call the metric system.
The basic units are the meter (39.37 inches) for length and the gram (15.432 grains) for mass or weight. Derived units are the liter (0.908 U.S. dry quart, or 1.0567 U.S. liquid quart) for capacity, being the volume of 1000 grams of water under specified conditions; the are (119.6 square yards) for area, being the area of a square 10 meters on a side; and the stere (35.315 cubic feet) for volume, being the volume of a cube 1 meter on a side, the term "stere," however, usually being used only in measuring firewood.
Names for units larger and smaller than these are formed from the above names by the use of the following prefixes: kilo-, 1000; hecto-, 100; deka-, 10; deci-, 0.1; centi-, 0.01; milli-, 0.001. To these are often added: tera-, one trillion; giga-, one billion; mega-, one million.
There is no truly universal measurement system, yet. However, the metric system is global, which is probably what the reader originally wanted. (Note that the metric system is essentially a terrestrial system, and about as suited to extra-terrestrial measurements as cubits and furlongs are.)
The Metric System.
Apparently it's not as universal as you think.
Universal indicator is just that - an indicator. It is not intended as an accurate measurement system.
The U.S. customary system
All of the above except the yard. Yards are an Imperial measurement, not metric.
Such a system is called a theory. For example, Darwin's Theory of Evolution, or Newton's Theory of Universal Gravitation, or Einstein's Theory of Relativity.
IUPAC unit
Because it is best. It is easiest (if you use a base ten counting system) to convert and compare.
The metric system
The majority of scientific calculations and experiments are done in what is called the 'metric system'.
Given that only Liberia and Burma officially share the US measurement system, it can hardly be described as universal!
Apparently it's not as universal as you think.
Not universal
The scientific system of gathering data with bias and error in measurement are reduced in psychology.
Metric System since its the easiest system to convert from.
the si system of units
so that bums(u) can get jobs there
The system of measurement based on the number 10 that was developed by scientists in the 1790s is called the metric system. It is also known as the International System of Units (SI) and is widely used around the world for scientific and everyday measurements.