How to use Vernier caliper?

• •Close the jaws

• •Calculate the least count

• •Place the object between the two jaws
• Record the position of zero of Vernier scale on the Main scale (3.2cm)

• •Notice the reading of VS which coincides with MS reading (3rd division in this case) 

 

• lReading of the instrument = MS div + (coinciding VS div x L.C)

l= 3.2 + (3 x 0.01)

l= 3.2 + 0.03

l= 3.23 cm

 

One More Sample For Reading 

 

 

• To measure the depth 

 

• lA rod extends from the rear of the caliper and can be used to measure the depth.

• lOpen the jaws of caliper and place the rod inside hole of the object, such as the rod reaches the inner most portion of the object.

• lRead the Vernier caliper. (same procedure as described in previous slides)