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Which of the following is true about vernier height gauges?

19. Which of the following is true about vernier height gauges?

1. Vernier height gauges are a type of instrument that is used to measure the height of objects
2. Vernier height gauges are a type of instrument that is used to measure the width of objects
3. Vernier height gauges are a type of instrument that is used to measure the length, height, and width of an object
4. Vernier height gauges are a type of instrument that is used to measure the height of only cylindrical objects

Answer

The correct answer is: A) Vernier height gauges are a type of instrument that is used to measure the height of objects

Explanation

: Vernier height gauges are a type of instrument that is used to measure the height of objects. It consists of two types of scales: the main scale and the sliding vernier scale, which are used to measure height with accuracy and precision.