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Answers
Explanation:
Auxanometer is an instrument used to measure the growth of the plant in terms of length. In order to measure the growth, a thread is passed over a pulley ad one end of thread is tied to the tip of plant and other end is tied to the weight. There is a needle in the centre of the pulley which shows deflection as the growth of a plant. The deflection can be read on the graduated arc to know the increase in length of the plant.
A manometer is a device used to measure pressure and a simple manometer consists of a U-tube filled with a liquid mercury of high density.
Answer:
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Explanation:
A measuring instrument is a device for measuring a physical quantity. In the physical sciences, quality assurance, and engineering, measurement is the activity of obtaining and comparing physical quantities of real-world objects and events. Established standard objects and events are used as units, and the process of measurement gives a number relating the item under study and the referenced unit of measurement. Measuring instruments, and formal test methods which define the instrument's use, are the means by which these relations of numbers are obtained