- Measurement is an activity to compare a quanity with another quantity that is assigned as unit. To measure the quantity of length, we can use a vernier caliper.
- The vernier consists of a main scale engraved on a fixed jaw and an vernier scale engraved on a movable/sliding jaw.
- The steps of reading the scale of a vernier caliper are:
- Read the main scale that coincides with the zero vernier scale.
- Read the vernier scale that is joint vertically with the main scale.
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