Reading the dial caliper is an easy task, and it involves the combination of the figures shown on the dial and values indicated on the main beam scale.

Here’s how to read a dial caliper.

  1. Start by identifying the 6 Main Parts of the Dial Caliper. A dial caliper has inner faces used in measuring the inner size of an object.
  • The exterior faces are essential in measuring objects that fit between them. The reference edge keeps track of bigger increments of measurement.
  • The pointer and the dial help to identify the size of an object and can measure up to ten-thousandth inch size. The caliper blade measures the depth of an item.
  1. With that done, close the caliper to ensure that no light can be seen along the jaws. Make sure you wash the caliper thoroughly, and if you see a metal burr on the jaws of the caliper, be sure to file it off.
  • While the clamp is still closed, lessen the bezel nut then twist the outer part of the bezel until the dial caliper’s needle is positioned to zero. After that, tighten the nut.
  • The dial caliper is always set to zero when you want to come up with accurate measurements.
  1. Then clean the section you want to measure as this can affect the measurement accuracy.
  2. Choose the jaw side that you want to use (whether outside or inside), depending on what you want to measure. The inner part of the caliper is designed to measure holes and gaps while the outer side is vital in measuring width, length, and thickness.
  3. After that, open the jaws of the caliper wide then measure the part. There must be a snug feel while closing the jaws, and the part can move in and out of the jaws without any complications. Then strengthen the lock screw to support the position on your caliper.
  4. Before you come up with the measurements, start by finding out the meaning of the marks. Every single mark equals 0. 1 or 1/10, and every ten marks are the same as 2.5 cm or 1 inch. On the dial caliper, the figure that the needle points must be expressed in thousandths. Therefore, you should multiply any figure you get by .001.
  5. As you take a closer look at the caliper, you’ll see a straight edge towards the left side of the dial indicator.
  • Please make sure you start by finding out how many inches the straight line exceeded then check the number of tenths that the straight line passed then write it down.
  1. Afterward, check on the dial indicator, then pick the figure beneath the needle then multiply by .001. After that, please write it down.
  2. Carefully add all numbers and make sure that the decimal places are written correctly.
  • You can also measure and read the measurements of an item with the interior faces. Place the item you want to measure in-between the faces of the dial caliper. After that, using a reference edge, look at the size of the object.
  • While measuring the depth of an item, increase the blade until it hits the bottom side of the part you target to measure. After that, read the measurements on the dial caliper using the pointer and the reference edge to get the right measurement.
  • When measuring the step length of an object, use the interior measuring faces. Position the measuring face on the bottom side of an object then measure its step length. Make use of the inner face then use a dial and reference edge and the pointer to read the measurements.

Note: A dial caliper measures only 6 inches and can’t measure any object with a length that exceeds that.

While using the dial caliper, never forget to zero in the dial caliper as this can result in incorrect readings. Also, please avoid using the outside faces base to measure an object that makes it inaccurate. Always remember to tighten the dial if you want accurate readings.

How to Read a Dial Caliper in Millimetres

  • Start by checking the main scale while taking your measurements, make sure you first read the figures written on the main scale. This is the number close to the left side of the reference edge, and it’s in millimetres when using a metric dial caliper. Each increment on the scale is 1 mm.
  • After that, look at the dial indicator. Read the values displayed on the dial indicator. Most metric dials have increment that is equal to 0, 02 mm.
  • With that done, add the two figures together. For instance, when the caliper reads 14.53 (14 mm will be displayed on the beam scale), + .43 will be displayed on the dial scale, giving a sum of 14.53.

That’s how you can read a dial caliper. It’s merely an essential and handheld tool that has unrivaled accuracy levels. Sometimes mastering the tool can be a hard, but it makes all measuring activities intuitive and easy.

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