Cara Membaca Jangka Sorong

>Hello Sohib EditorOnline! Have you ever wondered how to read a vernier caliper or jangka sorong in Bahasa Indonesia? If you work in engineering, manufacturing or any field that requires precision measurements, a vernier caliper is an indispensable tool. In this article, we will guide you through the steps of reading a vernier caliper accurately.

What is a Vernier Caliper?

A vernier caliper is a measuring device used to take precise measurements. It consists of a main scale and a secondary scale, also known as a vernier scale. The vernier scale is used to measure fractions of a millimeter or an inch more accurately than the main scale.

Parts of a Vernier Caliper

Before we learn how to read a vernier caliper, let’s first take a look at its components. A typical vernier caliper has the following parts:

Main scale	The main long scale that measures in millimeters or inches.
Vernier scale	The secondary scale that measures the fraction of a millimeter or an inch.
Jaws	The part that holds the object being measured. It can be either the inner jaws or outer jaws.
Depth bar	The part that extends from the back of the caliper and is used to measure the depth of an object.

Now that we know the parts of a vernier caliper, let’s move on to how to read it properly.

How to Read a Vernier Caliper

Step 1: Determine the Measurement System

Before you start taking a measurement, you need to determine if you are using the metric or imperial system of measurement. The main scale and vernier scale will have markings in either millimeters or inches.

Step 2: Close the Jaws

Bring the inner and outer jaws of the vernier caliper together so that they are touching. This is the “zero position” or “closed position” of the caliper.

Step 3: Take the Main Scale Reading

Look at the main scale and determine the value that lines up with the zero mark on the vernier scale. Each mark on the main scale represents one millimeter or one inch depending on the measurement system used.

Step 4: Take the Vernier Scale Reading

Now, look at the vernier scale and determine which line on the vernier scale aligns perfectly with the main scale. If there is not a perfect alignment, select the line that is closest to the main scale.

Once you have identified the line, read the corresponding number on the vernier scale. This number represents the fraction of a millimeter or inch more precisely than the main scale.

Step 5: Add the Readings Together

Add the value of the main scale reading to the value of the vernier scale reading to get the final measurement.

Common Mistakes When Reading a Vernier Caliper

Here are some common mistakes to avoid when reading a vernier caliper:

Reading the Vernier Scale Incorrectly

The most common mistake when using a vernier caliper is reading the vernier scale incorrectly. This can be avoided by carefully aligning the main scale and vernier scale and finding the best match between the two.

Not Taking into Account the Parallax Error

Parallax error occurs when the eye is not directly perpendicular to the vernier scale. This can cause the readings to be off by a fraction of a millimeter or inch. To avoid this error, make sure that your eye is perpendicular to the vernier scale.

Incorrect Zero Position

Make sure that the jaws of the vernier caliper are completely closed and aligned at the zero position before taking a measurement. Otherwise, your readings will be off.

FAQ

What is the smallest measurement that can be taken with a vernier caliper?

The smallest measurement that can be taken with a vernier caliper is typically 0.01 mm or 0.0001 inch.

What is the difference between a digital caliper and a vernier caliper?

The main difference between a digital caliper and a vernier caliper is the method of measurement. While a vernier caliper uses a secondary scale to measure fractions of a millimeter or inch, a digital caliper displays the measurement on a digital screen. Digital calipers are more accurate and easier to read, but are also more expensive than vernier calipers.

What is a micrometer?

A micrometer is another measuring tool used to take precise measurements. It consists of a spindle and anvil that are moved closer together to measure the thickness or diameter of an object. Micrometers can measure down to 0.001 mm or 0.0001 inch.

Congratulations! You have learned how to read a vernier caliper accurately. With practice, you will be able to take precise measurements and work with confidence in your field.

Cara Membaca Jangka Sorong