What is 8 of an inch on a ruler?
So that's convenient if you want to measure in eighths because 8 is half of 16.
Remember that two sixteenths of an inch equals one eighth, two eighths of an inch equals one quarter, and 2 quarters equals one half. For example, the second eighth-inch marking after the inch marking is a quarter inch.
An eighth (⅛) is a measurement of cannabis weight. It is the shorthand for “one-eighth of an ounce,” or 3.5 grams. Cannabis shops and dispensaries sell cannabis in a variety of different weights, the most common of which are grams, eighths, quarters, half-ounces, and ounces.
You'll notice on the top there are ten tenths. And in the bottom line there are 100 hundredths these
The 1/8 of an inch marks are the smaller marks found directly in between the 1/4 of an inch marks on the ruler.
Eighths of an inch (1/8") There are eight of them between each inch mark.
Put simply 1 = 1", 2 = 2" and so on. Between those numbers are a series of shorter marks which represent fractions of an inch. The mark directly in the middle of the inch denotes a measurment of 1/2" whilst the markings either side of it represent measurements of 1/4" and 3/4" respectively.
How to Read an Inch Ruler or Tape Measure - YouTube
How to Read a Ruler - YouTube
Measuring eighth of an inch - YouTube
Where is 0.8 on a tape measure?
0.8 is located between 0 inches and 1 inch, and 80% of the distance between Mark 12 and Mark 13. Our illustration below shows 0.8 inches marked with a red pin. Go here if you want us to find another length in inches on a ruler.
7 divided by 8 is 0.875, which is greater than 0 and less than 1. Therefore, 7/8 is located between 0 inches and 1 inch on the ruler.

Answer: 1/8th inch in decimal is 0.125.