digital vernier caliper insize
digital vernier caliper insize
digital vernier caliper insize

Digital Vernier Caliper

Dec 13, 2025

author image Deepak choudhary

Deepak Choudhary


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A digital vernier caliper is an upgraded version of the analog vernier caliper. It is a widely used linear measuring instrument with a least count of 0.01 mm, making it more accurate than the analog type.

A digital vernier caliper works on the same measurement principle as an analog vernier caliper, but the measurement is displayed in a digital format, which is faster, clearer, and more convenient.

Construction

A digital vernier caliper consists of:

  • A main scale

  • A digital display unit that slides along the main scale

Types of Measurement

Two main types of measurements can be performed:

  1. External measurement – using the external jaws (for shafts, rods, and outer dimensions)

  2. Internal measurement – using the internal jaws (for holes and slots)

The external jaws are divided into three contact surfaces: top, middle, and bottom, allowing better contact depending on the shape and position of the workpiece.

A depth bar is also provided for depth measurement.

Zero Setting

Before taking any measurement, ensure the caliper is set to zero using the zero-setting switch to eliminate zero error.

Material

Digital vernier calipers are typically made of stainless steel or tool steel, depending on the application and required durability.

Advantages

  • Higher accuracy and better readability

  • Faster measurements with reduced human error

  • Reliable and easy to use

  • Lower maintenance compared to analog vernier calipers

Limitation

  • More expensive than analog vernier calipers

Digital vernier calipers are preferred where speed, accuracy, and ease of reading are critical.

‹ Dial Indicator (Plunger Dial Gauge)

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