Q: How do you measure the internal diameter of a bottle?

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Internal diameter.

An internal caliper gauge.

Circumference = 2*pi*r r(radius) * 2 = diameter So. assuming the bottle is fairly a circle, measure across the bottom to get the diameter and then divide that in half for the radius and use the circumference formula. Of course a bottle is not quite a perfect circle everywhere and you might need calculus to get a proper circumference. I am thinking vector calculus.

A meter rod may not fit cross-wise inside a breaker (whatever that is).

The radius of a circle is half the diameter.

Related questions

Internal diameter.

Internal diameter.

An internal caliper gauge.

External diameter, internal diameter, and tooth count.

A vernier caliper

Measure external diameter. (A) Measure internal diameter. (B) Subtract B from A

It is not possible to answer this without more information. However to find the thickness measure the external diameter, measure the internal diameter subtract the internal from the external and that will give you the thickness of the pipe

Take a string, wrap it around the wine bottle once, and measure the length of the string.

vernier calliper

This will differ depending on the type of bottle. Even though the capacity of the bottles may be the same (2 L), the design of the bottle and therefore the cap used will be different.The diameter of the cap on a 2 L Coca-Cola bottle is 28mm.To measure the diameter of the cap that you are using, place your ruler across the middle of the cap and measure the length from one end of the cap, through the middle to the other.

To measure the inside diameter of a ring using a vernier caliper, you must use the small jaw or the internal jaw of a vernier caliper.

Calipers measure the internal or external dimensions of something.