how to find the internal diameter of a straw?
Well I wanted to get answers but I ended up posting an answer instead.
internal micrometer is a handy tool in the shop (and lab).
whats the answer
To find the internal diameter of a straw, you will need a few simple tools: a ruler or tape measure and a straw. Here are the steps to follow:
1. Measure the straw's outer diameter: Place one end of the ruler or tape measure at the edge of the straw and measure across to the opposite edge. This will give you the outer diameter of the straw.
2. Find the straw's thickness: Measure the outer diameter of the straw and subtract the inner diameter (which is what you're trying to find) from it. This will give you the thickness of the walls of the straw.
3. Subtract the thickness from the outer diameter: Take the outer diameter you measured in step 1 and subtract the thickness you calculated in step 2. This will give you the inner diameter of the straw.
For example, if the outer diameter of the straw is 8 mm and the thickness is 2 mm, the calculation would be as follows: 8 mm - 2 mm = 6 mm. Therefore, the internal diameter of the straw would be 6 mm.
Remember to ensure that your measurements are accurate by keeping the ruler or tape measure straight and taut while measuring. Repeat the process a few times to get a more precise average measurement if necessary.