How to measure the diameter of a thin copper wire and what are the methods?

Wrap the copper wire tightly around a pencil so that it has a certain length, take a scale to measure the total number of coils, and divide the number by the total number of coils to measure its diameter.

The diameter of the copper wire can be utilized with a ballpoint pen.

Measure ICBC tools, rulers and other methods. Use a ballpoint pen: wrap the copper wire tightly around the ballpoint pen, after a few turns, count the number of turns of the copper wire, and then use a scale to measure the total length of the winding fine copper wire, and divide the total length by the number of turns to obtain the diameter of the fine copper wire.

Make use of the measuring tool: Use a vernier caliper.

Or with a spiral micrometer.

Use a ruler: cut the copper wire into several sections, side by side compactly, measure with a ruler, and divide by the number of segments. The diameter of the copper wire can be measured with a ballpoint pen, measuring tools, rulers, etc.

1. Use a ballpoint pen: wrap the copper wire tightly around the ballpoint pen, after a few circles, count the number of turns of the copper wire, and then measure the total length of the winding fine copper wire with a scale, and divide the total length by the number of turns to obtain the diameter of the fine copper wire.

2. Use measuring tools: use vernier calipers or spiral micrometers.

3. Use a ruler: cut the copper wire into several sections, arrange them compactly, measure them with a ruler, and then divide them by the number of sections. Guess.

The diameter of the fine copper wire is small and cannot be measured directly, so the indirect measurement method should be adopted

Method. 1. Tightly arrange the thin copper wire on the pencil and wrap a number of laps, use the length l of the winding part with the scale ruler to count the number of turns of the winding part, then the diameter of the thin copper wire d=l n=l n.

Method 2: Tightly wound the copper wire with a thin wire for 20 turns, measure the length of the thin wire L with a ruler, and calculate the size of d according to L=20 d.

Method 3: Copper wire can be measured with a spiral micrometer. <>

Don't use vernier calipers, use centimeter cards.

The centimeter card is also called a micrometer, a micrometer or a spiral micrometer, which can measure millimeters, and we call millimeters, which is one hundredth of 1 millimeter, called a thread, also known as a meter. The diameter of a hair is about six or seven strands.

The centimeter card has a bow-shaped ruler frame, has a fixed plane, and a plane that can advance and retreat, and it rotates under the action of a differential cylinder and a micro-motion device. Both planes are made of tungsten steel, which is not easy to wear. The scale on the scale rod is the main scale, the scale above the horizontal line, a small grid is one millimeter, and the scale below the horizontal line, a small grid is also one millimeter, they are staggered and arranged in a stuffy hall.

And the dial is rotated with the rotation of the micro-motion device, and the upper circle is divided into fifty equal small grids, because the interval of the threads inside is millimeters, so the dial rotates a small grid, which is equivalent to the rotation of the micro-motion device in millimeters, that is, a small grid on the dial is millimeters, and the unit is wire.

When we use the centimeter card, we first rotate the differential cylinder, when the two planes of the centimeter card are in contact with the measured surface, we will stop rotating the differential cylinder, and change the rotation of the micro-motion device to make the two planes contact with the measured surface, and wait until the three sounds of "click" are issued, and the reading can be carried out. The center line of the measuring shaft should be consistent with the direction of the measured length of the workpiece, and should not be skewed.

I hope I can help you with your doubts.

Step 1: Prepare a pencil of uniform thickness.

Step 2: Wrap the copper wire tightly around the pencil for several turns.

Step 3, use a ruler to measure the long-term permeability of the copper wire winding part of the macro winding part of the worm mill.

Step 4, divide the measured length by the number of turns wound by the copper wire, and the number is the diameter of the copper wire.

Using the method of measuring more and counting less, the copper wire is wound around a wooden stick, the number of turns n is recorded, and then the total length l is measured. Then the diameter of the copper wire leakage can be calculated.

Straighten the copper wire, then tightly wrap it around the pencil several times, without overlapping or gaps, and then measure the total length with a scale, dividing this length by the number of loops scattered by the clumps.

If you use vernier calipers, the copper will be flattened.

Wrap a thin copper wire tightly around a cylindrical object, such as a pencil, for 100 turns.

Use a ruler to measure the width d of 100 turns, divide by 100, which is the diameter of the thin copper wire.

Wrap the copper wire tightly around the pencil, and remember the number of coils wound, measure the distance of the copper wire wrapped on the pencil with a scale, and then divide by the number of coils, which is the diameter of the copper wire.

Wrap the thin copper wire tightly and non-overlapping on the pencil for 20 turns, measure the total width l with a scale, and the diameter of the thin copper wire d = l 20

Question addendum: Measure the diameter of a thin copper wire with a scale Wrap it densely on a pencil, measure the length with a micrometer after wrapping it around a few hundred times, and divide the length by the number of turns to get the diameter. How to do it for junior high school students: Tight on a pencil.

Wrap the copper wire tightly around a pencil, measure the length l of the winding, and count the number of turns of the copper wire n, r=l n

The same copper wires are shot side by side to measure the width of 2

Use a pencil and a scale to measure.

Steps:1Put the thin copper wire lead head on the pencil tightly arranged several times, 2Use a scale to measure the total length of this coil l,3The number of suns stared at the fine copper wire and the number of turns n, 4The diameter of the thin copper wire is calculated from d=l n.

The diameter of the fine copper wire is small and cannot be measured directly, so the indirect measurement method should be adopted

Method. 1. Tightly arrange the thin copper wire on the pencil for several turns, use the scale to beat the length of the winding part l, count the number of turns of the winding part, then the diameter of the thin copper wire d=l n=l n.

Method 2: Tightly wound the copper wire with a thin wire for 20 turns, measure the length of the thin wire L with a ruler, and calculate the size of d according to L=20 d.

Method 3: Copper wire can be measured with a spiral micrometer.