Download - Experiment # 1: Measurement
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EIND 3101Material Science Lab.
Experiment # 1: Measurement
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The determination or estimation of magnitudes of quantities.
The process of obtaining the magnitude of a quantity, such as length or mass, relative to a unit of measurement, such as a meter or a kilogram.
Measurement Process
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Objective
To learn the basic skills of measuring an object using some standard tools and methods.
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Experiment Tools
•Vernier Caliper
•Micrometer
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Caliper
It is an instrument used to measure linear dimensions ( length, depth,..).
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Types of Calipers
Inside Caliper Outside Caliper
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Divider Caliper Oddleg Caliper
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Vernier Caliper
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Dial Caliper
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Digital Caliper
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It can measure: •Internal dimensions, •External dimensions, and •Depth by the use of a probe.
Vernier Caliper
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How does it work?
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Instructions on Use
•Close the jaws lightly on the object to be measured.•If you are measuring something with a round cross section, make sure that the axis of the object is perpendicular to the caliper.•The boldface numbers on the fixed scale are centimeters.
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Micrometer
•It is more accurate than the Vernier caliper.•It allows the measurer to have up to 0.0001 accuracy.
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Types of Micrometer
Outside, inside and depth
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How does it work?
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Example
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Trial 1Trial 2Trial 3
CaliperMicro.CaliperMicro.CaliperMicro.
Part 1
Part 2
Part 3
Avg.
STD
All dimensions in mm.
Table of Results
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1
n
ii
xx
n
Average
Standard Deviation
2 2 2
1 1 1
( ) ( )
1 1 ( 1)
n n n
i i ii i i
x x x xS
n n n n
Average and Standard Deviation