Question

The units on the ruler are in nanometers (nm). look at the graduations on the ruler. what does each graduation represent?

Answer 1

The units on the ruler are inches, centimeters, and millimeters. Nanometers (nm) is equivalent to 10^-9 m. Each graduation on the ruler represents 0.1 millimeters or 0.01 centimeters. The other side also has a graduation of 0.1 inch. The function of the ruler depends on how you use it. 

Answer 2

The answer is 0.2 nanometers