No, a micrometer screw gauge is definitely not the standard tool for measuring the inner diameter of a tube. You’re thinking of things like a telescoping gauge or maybe even a small hole gauge which you then measure with a regular external micrometer or calipers. The way a micrometer screw gauge is designed, with the anvil and spindle closing in on an object, it’s perfect for external diameters or the thickness of something flat. To measure an inner diameter directly, you need a tool that can expand inside the hole or a specific internal micrometer, which looks quite different. For a school assignment, they probably want you to mention an internal caliper or an internal micrometer, which is a specialized tool. If the tube is wide enough, say over an inch or two, you might be able to use the jaws on a vernier caliper or digital caliper if they have the pointed tips that can fit inside, but that’s not as accurate as the dedicated internal tools. It’s a common confusion, so make sure you clarify the difference between internal and external measuring instruments for your report.
Short answer is no. Standard micrometers are for external dimensions. You’d have to use a telescoping gauge and then measure that gauge with the micrometer, which is a two-step process, or just use calipers directly if the required accuracy isn’t extremely high. Trying to use a regular micrometer on an ID would be impossible or give you completely wrong readings.
That’s a good question for a school project, you’re getting at the difference between internal and external measuring tools. A regular micrometer? Nah, that’s for the outer diameter or the thickness of materials. If you need a super-precise inner diameter, you’re looking for an internal micrometer (sometimes called a bore micrometer or similar) or maybe even a dial bore gauge which is even more specialized. For smaller stuff, like the bore of an engine cylinder, they use those specialized tools. For your assignment, stick to saying the external micrometer is not the right tool for inner diameter.
Absolutely not, unless you’re trying to measure the thickness of the wall of a very small tube, which is a different measurement entirely. The micrometer is for outside measurements. You’d use inside calipers, an internal micrometer, or the top jaws of a vernier caliper for the inner diameter. The screw gauge just isn’t built to expand into a circle like that. It closes in.
Not directly, you can’t. The standard micrometer screw gauge measures things by clamping them between the anvil and the spindle. To get the inner diameter, you need a tool that expands inside the bore. The closest you get with the same principle is an internal micrometer, but it’s a completely different tool design. If you’re talking about a vernier caliper, yes, the small upper jaws are specifically for inner diameters, but a micrometer? Forget about it for ID unless you use it in conjunction with another tool like a small hole gauge.
Generally, nope. The regular micrometer screw gauge, the one everyone thinks of, is designed for outside measurements (OD). Think about how it works: you close the jaws onto the object. How would you do that on the inside of a tube? You can’t. You’d use an internal micrometer if you need that kind of precision, or maybe a set of internal (inside) calipers and then measure those with an external micrometer. For bigger stuff, a caliper’s inside jaws work, but that’s not a micrometer.
No, a micrometer screw gauge is definitely not the standard tool for measuring the inner diameter of a tube. You’re thinking of things like a telescoping gauge or maybe even a small hole gauge which you then measure with a regular external micrometer or calipers. The way a micrometer screw gauge is designed, with the anvil and spindle closing in on an object, it’s perfect for external diameters or the thickness of something flat. To measure an inner diameter directly, you need a tool that can expand inside the hole or a specific internal micrometer, which looks quite different. For a school assignment, they probably want you to mention an internal caliper or an internal micrometer, which is a specialized tool. If the tube is wide enough, say over an inch or two, you might be able to use the jaws on a vernier caliper or digital caliper if they have the pointed tips that can fit inside, but that’s not as accurate as the dedicated internal tools. It’s a common confusion, so make sure you clarify the difference between internal and external measuring instruments for your report.
Short answer is no. Standard micrometers are for external dimensions. You’d have to use a telescoping gauge and then measure that gauge with the micrometer, which is a two-step process, or just use calipers directly if the required accuracy isn’t extremely high. Trying to use a regular micrometer on an ID would be impossible or give you completely wrong readings.
That’s a good question for a school project, you’re getting at the difference between internal and external measuring tools. A regular micrometer? Nah, that’s for the outer diameter or the thickness of materials. If you need a super-precise inner diameter, you’re looking for an internal micrometer (sometimes called a bore micrometer or similar) or maybe even a dial bore gauge which is even more specialized. For smaller stuff, like the bore of an engine cylinder, they use those specialized tools. For your assignment, stick to saying the external micrometer is not the right tool for inner diameter.
Absolutely not, unless you’re trying to measure the thickness of the wall of a very small tube, which is a different measurement entirely. The micrometer is for outside measurements. You’d use inside calipers, an internal micrometer, or the top jaws of a vernier caliper for the inner diameter. The screw gauge just isn’t built to expand into a circle like that. It closes in.
Not directly, you can’t. The standard micrometer screw gauge measures things by clamping them between the anvil and the spindle. To get the inner diameter, you need a tool that expands inside the bore. The closest you get with the same principle is an internal micrometer, but it’s a completely different tool design. If you’re talking about a vernier caliper, yes, the small upper jaws are specifically for inner diameters, but a micrometer? Forget about it for ID unless you use it in conjunction with another tool like a small hole gauge.
Generally, nope. The regular micrometer screw gauge, the one everyone thinks of, is designed for outside measurements (OD). Think about how it works: you close the jaws onto the object. How would you do that on the inside of a tube? You can’t. You’d use an internal micrometer if you need that kind of precision, or maybe a set of internal (inside) calipers and then measure those with an external micrometer. For bigger stuff, a caliper’s inside jaws work, but that’s not a micrometer.