What is a Vernier Caliper and how Reading Vernier Caliper in mm and inches?

  What is a Vernier Caliper and how Reading Vernier Caliper in mm and inches?

✅ What is a Vernier Caliper?

A Vernier Caliper is a precision instrument used to measure:

External dimensions (using the outside jaws)

Internal dimensions (using the inside jaws)

Depth (using the depth rod)

📏 Parts of a Vernier Caliper:

🔹 Vernier Caliper Parts:

1. Main Scale (in mm or inches)
2. Vernier Scale
3. Fixed Jaw
4. Sliding Jaw
5. Depth Rod
6. Locking Screw

📐 Reading Vernier Caliper in mm (Metric)

✳️ Example Reading in mm:Step-by-Step:

Main Scale Reading (before 0 of Vernier scale):

    Main scale shows: 24 mm

Vernier Scale Reading:

    Find the line on the vernier scale that aligns with any line on the main scale.

Suppose the 6th division aligns ⇒ 6 × 0.02 = 0.12 mm

Total Reading:

24.00mm+0.12 mm=24.12mm

📐 Reading Vernier Caliper in inches (Imperial)

✳️ Example Reading in inches:Step-by-Step:

Main Scale Reading:

Suppose 1 inch = 10 main divisions.

Read the number before the 0 on the vernier scale. Suppose it shows 1.2 inches.

Vernier Scale Reading:

Find which vernier line aligns with the main scale.

Suppose the 6th line aligns ⇒ 6 × 0.001 = 0.006 inches

Total Reading:

1.200+0.006=1.206inches

🔄 Vernier Scale Least Count (LC):

Metric (mm):

Least Count = 0.02 mm (usually)

Inch:

Least Count = 0.001 inches (depends on model)

Check Tool. Vernier Caliper Reading Calculator