A vernier scale is a visual aid to take an accurate measurement reading between two While calipers are the most typical use of Vernier scales today, they were originally developed for angle-measuring instruments such as astronomical. Two such instruments that are based on a vernier scale which you will use in the laboratory to measure lengths of objects are the vernier callipers and the. How to Read a Vernier (caliper): Looking at an early caliper, you’ll notice that it kinda looks like a tomahawk and has a scale down it’s length. More about the.

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A Vernier caliper is an instrument that measures internal ro external dimensions and distances. It allows you to take more precise measurements than you could with regular rulers.

This wikiHow will show you how to use and callipper a Vernier caliper. To use a Vernier caliper, start by twisting the locking screw counterclockwise to loosen it. Then, close the jaws of the instrument all reda way so you start with your scales lined up at zero. Next, open the jaws and insert an object between them, closing the jaws around it to hold it in place.

Once the jaws are closed around the object, look at the number on the main scale that lines up with the sliding scale’s zero. Then, find the mark on the Vernier scale that lines up with a number on the main scale.

Vernier scale

Finally, add those two numbers together to get your measurement. Measuring and Marking Tools. A wikiHow Staff Editor reviewed this article to make sure it’s helpful and accurate. This article was co-authored by our trained team of editors and researchers who validated it for accuracy and comprehensiveness. This article has over 1, views, and 30 testimonials from our readers, earning it our reader-approved status.

Understand the parts of the Vernier caliper. A Vernier caliper has main jaws that are used for measuring external diameter, as well as smaller jaws that are used for measuring the internal diameter of objects. Some hpw also have a depth gauge. The main scale is fixed in place, while the Vernier scale is the name for the sliding scale that opens and closes the jaws.

How to Use a Vernier Caliper: 10 Steps (with Pictures) – wikiHow

Read the scales on your Vernier caliper. Each scale of your caliper reads like an ordinary ruler. Typically, a caliper has a main scale marked with numbered inches or centimeters, plus smaller divisions between them. The sliding Vernier scale should have a label engraved on it to tell you what it represents. For example, if the main scale’s smallest lines represent 0.


The main scale is “life size,” while the sliding scale is magnified for easy reading. This magnification system allows the Vernier caliper to measure more precisely than a ruler. Check the scale of your smallest divisions. Before making a measurement, count the number of lines between two numbers czlliper your Vernier scale. Use this to determine how much distance each of the smallest lines represents.

For example, the numbers on a Vernier scale represent 0. Clean the object you are measuring. If your Vernier caliper has a locking screw, loosen it before you begin. Twisting something to the right clockwise will tighten it, while twisting it to the left counter clockwise will loosen it. Before measuring anything, close the jaws and faces to zero out the reading so that you get a precise measurement. Subtract 1 mm from all measurements to get the right result. If the zero on the sliding scale is to the left of the main scale zero, you have a negative zero error.

Slide it so the zeros line up, while watching another mark to see the size of the error. For example, if the 0. Slide one of the jaws against the object.

The caliper has two types of jaws. The larger ones tighten around an object, to measure the distance across it. The smaller jaws fit into an calliepr, and can then be pushed outward to measure its internal diameter. Verniier can adjust either pair of jaws by sliding the smaller scale.

Once you’ve got one of the jaws in position, tighten the locking screw if there is one. Read the main scale where it lines up with the sliding scale’s zero.

Rfad main scale on a Vernier caliper typically tells you the whole number plus the first decimal. For example, if the 0 on the sliding scale lines up with the 2 inch mark, your measurement is 2 inches. If it lines up past 2 inches by six tenth-inch marks, your measurement is 2. If the result is between two lines, just use the smaller value.

Do not try to estimate a value between the two lines. Read the Vernier scale. Find the first mark on the Vernier scale that lines up perfectly vernir any line on the verhier scale. That mark tells you the value of the additional digits. For example, the 14 on the Vernier scale aligns with a line on the main scale. Let’s say the scale represents 0. It makes no difference which line on the main scale it aligns with. We’ve already taken our reading from the main scale; don’t take another one.

Add the numbers together.

Add the main scale and Vernier scale results together to get the final answer. Make sure you use the correct units as labeled on each scale, or you won’t get the right answer. In our example, we measured 2. Our final measurement is 2. The digits don’t always line up this neatly. For example, if the main centimeter scale reads 0. For measuring length, compare the 0 line of the Vernier scale with the main scale. Then check the division that coincides with the main scale. Then add the first reading with the third reading by multiplying.


Not Helpful 57 Helpful Least count is the ratio of the smallest division of the main scale to the number of divisions on the vernier scale.

Not Helpful 45 Helpful They can be used in the repair or creation of anything that needs a tight tolerance. These instruments are commonly used in scientific and industrial fields.

Not Helpful 31 Helpful You always get an error when measuring something, it’s just probably so small that you don’t notice it. If you don’t notice it, then the error is probably too small to matter in what you’re doing.

Not Helpful 38 Helpful What are the different measurements that can be made with a Vernier caliper? The Vernier caliper can measure the inner diameter of an object, the outer diameter of an object, and the depth of an object. Not Helpful 28 Helpful It should be written on the caliper. A lot of other factors, such as measuring force how hard the jaws are pressed together onto the parttemperature and the quality of the caliper all play a part in the accuracy of the measurement.

Not Helpful 29 Helpful You will need calipers or any measuring instrument with a vernier scale and an accuracy of 0. First, move the slide to 7. Lock the slide with the screw if necessary.

Not Helpful 39 Helpful Not Helpful 41 Helpful How can I measure the diameter of a thin cylinder using vernier calipers? Not Helpful 32 Helpful It’s used to measure the internal and external diameters of objects and the depth of the objects. Not Helpful 8 Helpful How do I measure freeze plug inner diameter?

Using the Vernier Calipers & Micrometer Screw Gauge

Answer this question Flag as How do I find the verniers divisions? And how do I find callkper coinciding of the scale? How do I find the mean using vernier caliper? How do I take measurements on a vernier caliper? Why are inches used vernie of mm in the third step? Include your email address to get a message when this question is answered.

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