How to Use Calipers: 11 Steps

Calipers are versatile measuring tools, designed to measure the distance between objects with remarkable precision. Most commonly used in engineering, woodworking, automotive work, and more, calipers allow you to achieve accurate measurements. If you are new to using calipers or just looking to refine your skills, follow these 11 steps to use them effectively.
1. Choose the right caliper type: There are three main types of calipers – vernier, dial, and digital. Each type has its advantages and disadvantages. Choose one that best suits your needs and preferences.
2. Clean the surfaces: Before you start using your caliper, it is essential to clean both the object you want to measure and the caliper itself. This ensures accurate readings and prevents any possible damage or debris buildup.
3. Familiarize yourself with the caliper parts: Get acquainted with the main components of a caliper which includes the jaws (inside and outside), depth rod, locking screw, main scale (fixed), and sliding scale (vernier or dial).
4. Turn on your digital caliper or zero-out the dial: Make sure your digital caliper is switched on when using it. For analog models like dial and vernier types, ensure that both scales read zero when the jaws are fully closed.
5. Properly position the object: Securely hold the object between your hands or place it on a flat surface as you measure it using your calipers.
6. Measure outside dimensions: To measure an object’s outside dimensions (i.e., its length or diameter), gently open the external jaws of your caliper until they rest comfortably against either side of what you want to measure.
7. Measure inside dimensions: To measure internal dimensions like holes or slots, use the inside jaws instead of the outside ones by inserting them into the space you wish to measure and then slightly opening them until they rest against the inner surfaces.
8. Measure depth: To measure the depth of an object, extend the depth rod from the bottom of the caliper until it touches the surface. Ensure that the caliper’s base is parallel to the surface while performing this step.
9. Lock the reading: Once your measurement is taken, lock it in place using the locking screw or similar device on your caliper to secure the reading and eliminate potential measurement errors.
10. Read the measurement: If you are using a digital caliper, look at the digital display to see your measurement. For the vernier or dial models, read the main scale first and then add any fine adjustment taken from the vernier or dial scale.
11. Repeat and check: Make sure to take multiple measurements and compare them to ensure accuracy and consistency in your readings.
By following these 11 steps, you can use calipers with confidence and achieve accurate results in various applications. So go ahead, master this skill, and enjoy precise measurements in your projects!