1. Perform Mensuration and
Calculation
At the end of the lesson, you are
expected to:
LO1. Select measuring instrument
LO2. Carry out measurement and calculations
2. Area – extent of part of a surface enclosed within a boundary
Calculation – the act or process of or result of calculating
Circumference – distance around the circle
Classification – group or category within an organized system
Decimal – number expressed in a counting system that uses units of 10,
especially a decimal fraction
Definition of Terms
3. Dimension - measurable extent such as length, thickness and width
Fraction - number expressed as a quotient of two other numbers
Geometric Shapes – characterized by straight line, regular curves and
angles
Graduation – scale of a measuring tool
Mensuration – act or art of measuring
Definition of Terms
4. • Perimeter – bounding line or curve of a plain area
• Standard – serves as a measure of reference
• Stock – refers to a lumber for a certain furniture job
• Substrate – wood to be cut in a cutting machine
• Volume – space inside a solid figure
Definition of Terms
18. HANDLING OF MEASURING INSTRUMENTS
and TOOLS
A. DO’S
1. Wipe measuring tools/instruments before returning them to the
storage room.
2. Oil the movable parts of the measuring tools such as zigzag rules,
calipers, dividers and compasses to avoid stock-up.
3. Make sure that grits like sand do not get inside the housing or case
of a pull-push rule to avoid wearing off of the graduations.
4. Check the lock of a pull-push rule if it is working.
19. HANDLING OF MEASURING INSTRUMENTS
and TOOLS
B. DON’T’S
1. Do not wipe off edges of the steel tape of pull-push rule with
bare hands to avoid injury.
2. Do not pull the steel tape of pull-push rule too much to avoid
the coil spring from damage.
3. Do not use the caliper as tongs.
