The vernier caliper is used in length measurements to gain an additional digit of accuracy compared to a simple ruler
The Vernier calliper consists of a main scale fitted with a jaw at one end.
Another jaw, containing the vernier scale, moves over the main scale.
When the two jaws are in contact, the zero of the main scale and the zero of the vernier scale should coincide. If both the zeros do not coincide, there will be a positive or negative zero error.
Record the position of zero of the vernier scale on the main scale (3.2 cm in figure below).
Angka nol di vernier scale menunjukkan ke angka 3.2 cm dan garis sejajar antara main scale dan vernier scale sejajar di garis ke 3 sehingga yang hasil yang dibaca adalah
3.2 cm + 0.03 cm = 3.23 cm
To measure the inner and outer diameter of a hollow cylinder or ring, inner and outer callipers are used. Take measurements by the two methods as shown in figure above.
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