EIND 3101Material Science Lab.

Experiment # 1: Measurement

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

Objective

To learn the basic skills of measuring an object using some standard tools and methods.

 

Experiment Tools

•Vernier Caliper

•Micrometer

Caliper

It is an instrument used to measure linear dimensions ( length, depth,..).

Types of Calipers

Inside Caliper Outside Caliper

Divider Caliper Oddleg Caliper

Vernier Caliper

Dial Caliper

Digital Caliper

It can measure: •Internal dimensions, •External dimensions, and •Depth by the use of a probe.

Vernier Caliper

How does it work?

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.

Micrometer

•It is more accurate than the Vernier caliper.•It allows the measurer to have up to 0.0001 accuracy.

Types of Micrometer

Outside, inside and depth

How does it work?

Example

Trial 1Trial 2Trial 3

CaliperMicro.CaliperMicro.CaliperMicro.

Part 1

Part 2

Part 3

Avg.

STD

All dimensions in mm.

Table of Results

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