TLE 7 - Learning Outcome 2

Learning Outcome 2

Carry out measurements and calculations

PERFORMANCE STANDARDS

Numerical computations are self-checked and corrected for accuracy.
Accurate measurements are obtained according to job requirements.
Identified and converted systems of measurements to job requirements.
Measured work pieces according to job requirements.

Materials

Paper
Ball pen
Ruler
Push-pull tape
Steel rule
Activity Sheets

What Do You Already Know?

Let us determine how much you already know about selecting measuring tools and instruments. Take this test.

What Do You Need To Know?

Read the Information Sheet 2.1 very well then find out how much you can remember and how much you learned by doing Self-check 2.1.

SYSTEM OF MEASUREMENT

A system of measurement is a set of units which can be used to specify anything can be measured, Measurement system, any of the systems used in the process of associating numbers with physical quantities and phenomena. Although the concept of weights and measures today includes such factors as temperature, luminosity, pressure, and electric current, it once consisted of only four basic measurements: mass (weight), distance or length, area, and volume (liquid or grain measure). The last three are, of course, closely related.
These are common units of measurement used in making layout and installation of electrical materials:

A. Linear measures

1. English system provides the creative way on how people can measure by themselves. For example, people measure shorter distance on the ground with their feet. They measure long distances by their palms which is equal to a

yard.
Inch
Yard
Miles

2. Metric system is a decimalized system of measurement. It exists in several variations with different choices of base units. Metric units are widely used around the world for personal, commercial and scientific purpose.