Vernier Caliper Quiz

What is the least count of a standard Vernier Caliper (in mm)?

• 0.01 mm

• 0.02 mm

• 0.05 mm

• 0.1 mm

The Vernier scale works on the principle of:

• Lever

• Screw thread

• Optical magnification

• Difference in scale divisions

A Vernier caliper is used to measure:

• Only external dimensions

• Only internal dimensions

• Only depth

• External, internal, and depth

Which part of the Vernier caliper is used to measure the depth of holes?

• Main scale

• Inside jaws

• Outside jaws

• Depth rod

The main scale of a Vernier caliper is graduated in:

• Inches only

• Millimeters only

• Either inches or millimeters (or both)

• Degrees

What will be the reading if the main scale reads 10 mm and the 7th Vernier division coincides with a main scale division (LC = 0.02 mm)?

• 10.14 mm

• 10.07 mm

• 10.70 mm

• 17.00 mm

What is the total number of divisions on a typical Vernier scale in metric Vernier calipers?

• 10

• 20

• 50

• 100

Zero error in Vernier caliper is:

• Not possible

• Ignored during measurement

• The error when jaws are closed but reading is not zero

• The least count of the instrument

Positive zero error occurs when:

• Vernier zero lies before the main scale zero

• Vernier zero lies after the main scale zero

• Both zeros coincide

• Vernier scale is worn out

What is the correct formula for least count of a Vernier caliper?

• LC = 1 MSD – 1 VSD

• LC = 1 VSD – 1 MSD

• LC = Total range ÷ Number of divisions

• LC = Pitch ÷ Number of threads