Do you need to know the outside diameter of a pipe, pipeline, or hose?
Here are your options:
- Wrap a flexible measuring tape around it and divide by pi (3.14159).
 - Use a caliper and transfer its results to a ruler.
 - Use a micrometer of the correct size range, and read the scale.
 - Let a Diameter tape measure do all the work for you.
 
I prefer using method number 4. It is quick and accurate. Click here for the easy instructions:







 
 
 


