There is no smallest measurement since you cannot compare the size of a second (time) with a gram (mass). Furthermore, by suitable use of prefices, you can always find a smaller unit even if it has no real life application.
The smallest unit do data is a bit.
meter?
It is the smallest unit of measure and it is Greek
3
there isn't one.
There are many units which are used to measure the lengths of the object . The smallest unit of length is fero meter.
A millimeter is one thousandth of a meter.A a decimeter is one tenth of a meter.so millimeter is the smallest unit.
There is only one unit of measure for current: the ampere. All currents are measured in amps or fractions of amps or their equivalent.
An atom is the smallest unit. Anything polyatomic is not an atom.
A Centigram is the second smallest unit to measure mass
Probably the Planck distance = 1.6162*10-35 metres.
sometimes decimeter, sometimes centimeter(if it measures mm)
If it is a molecular compound, the smallest unit is called a molecule. If it is an ionic compound, the smallest unit is called a formula unit.