The chart below shows the main decimal points and their equivalents:
The decimal points increase is done in increments of .125 in order to have a ratio
Smaller values like 1.333'' represent even smaller units such as 16'ths of an inch. 1.333'' = 1 5/16'' and so on.
| Decimal numeric value |
1" |
1.125" |
1.250" |
1.375" |
1.5" |
1.625" |
1.750" |
1.875" |
2" |
|
Equivalent in ''8ths'' |
1" |
1 1/8" |
1 1/4" |
1 3/8" |
1 1/2" |
1 5/8" |
1 3/4" |
1 7/8" |
2" |