Vernier caliper

Caliper – Function, Types, and Applications

A caliper is an essential measuring instrument widely used in mechanical engineering, metalworking, craftsmanship, and DIY projects. It allows for precise length, depth, and internal measurements and is known for its accuracy and versatility.

Function and Design

A caliper consists of a fixed and a movable jaw that slide along a scale. By opening or closing the jaws, measurements can be taken with high precision. The scale is typically marked in millimeters and inches, and many modern models feature digital displays for direct reading of the measurement values.

Types of Calipers

Analog caliper: A traditional model with a vernier scale for reading measurements manually.
Digital caliper: Equipped with an electronic display for quick and easy reading, often with additional functions like data storage.
Depth caliper: Designed specifically for measuring depths.
Inside caliper: Specialized for measuring internal diameters.

Advantages of a Caliper

High precision: Measurement accuracy down to a few hundredths of a millimeter.
Versatility: Suitable for internal, external, and depth measurements.
Ease of use: Intuitive design and straightforward operation.
Durability: Resistant to mechanical stress and long-lasting.

Applications

Mechanical engineering: Precision measurement of components and workpieces.
Metalworking: Checking diameters, lengths, and depths of metal parts.
Craftsmanship: Versatile measurements in various trades and crafts.
DIY: Accurate measurements for home improvement and repair projects.

Maintenance and Care

To ensure long service life and accuracy, regular maintenance is essential. Clean the jaws and scale after each use, lubricate moving parts periodically, and store the caliper in a protective case. Avoid strong impacts and protect the instrument from moisture and extreme temperatures.

Buying Criteria

Material quality: Durable materials like stainless steel ensure longevity and precision.
Measuring range: Should be suited to the intended applications.
Accuracy: High precision for exact measurements.
Features: Additional functions such as digital display or data transfer can be beneficial.
Price-performance ratio: A good balance of cost, quality, and functionality.

Safety Tips

To ensure safe and effective use, make sure the measuring surfaces are clean and free of dirt or oil. Avoid applying excessive force to the jaws to prevent damage. Store the instrument securely after use to protect it from mechanical or environmental harm.