1. Chapter 8 Measurement Tools
MAP
Chapter 8
Measurement Tools

2. Define measurement?

3. Measurement
A standard unit, which objectively describes the physical qualities of an object.
The process of determining precise dimensions within standard increments.

4. What are the two measuring systems that are utilized in the USA?

5. Measuring Systems
US Customary
Metric

6. Define the physical qualities that are represented for US Customary and Metric?

7. US Customary and Metric physical qualities
Measurement for distance and area are in inches, feet, and square inches.
Measurements for weight and volume are in quarts, cubic inches, and pounds.
Measurement for temperature is in Fahrenheit.
Measurement for pressure is in pounds per square inch.
Metric
Measurement for distance and area are in millimeters, meters, and square centimeters.
Measurements for weight and volume liters, cubic centimeters, and kilograms.
Measurement for temperature is in Celsius.
Measurement for pressure is in kilograms per square millimeter.

8. Describe the four common physical qualities that can be measured?

9. Four common physical qualities
Distance
Mass
Temperature
Time

10. Define distance?

11. Distance The separation between two points.
How far a part two objects or places might be.

12. Define mass?

13. Mass The amount of matter in an object.
Describes the quantity of matter present in an object.
Matter is anything that has mass and can take up space.
Ex. If two identical looking parts are weighed, one made of copper and the other made of lead, the lead unit will weight more. Lead has more matter per unit of volume than does copper.

14. Define temperature?

15. Temperature How hot or cold a material or object is.
The two scales that measure temperature are:
Fahrenheit: The US Customary scale, which has 180 degrees between the freezing and boiling points.
Celsius: The Metric scale, where the freezing point is 0 and boiling point is 100 degrees.

16. Define time?

17. Time
How long an event lasts.

18. Describe what volume represents?

19. Volume Volume is a measurement, which is related to distance.
Volume is measured in cubes or a cubic measurement.
Examples of volume measurements are:
Liters, which is equivalent to 10 cubic centimeters on each side.
Cubic inches, which is equal to 1” cubed.
A measurement of 4

20. Define precision measurement?

21. Precision Measurement
A type of measurement that is used when the size is critical to the function of the device.
Accuracy is so important that the measurement is made to the nearest hundred of an inch.

22. What type of industry utilizes precision measurement?

23. Precision Measurement and Industry
Used in the manufacturing of:
Metals
Engine parts, shafts, pulleys, spindles, and gears
Ceramics
Toilet parts, electrical parts, computer parts, and engine parts
Plastics
Vacuum parts, car parts, computer parts, and other electronic parts
Composites
Used as a substitute for the above three.

24. Define standard measurement?

25. Standard Measurement
A type of measurement used when the size of the part is not critical to the function of the product.

26. What type of industry utilizes standard measurement?

27. Standard Measurement and Industry
Construction
Residential construction, concrete, commercial construction and industrial construction
Cabinetry
Kitchen cabinets, furniture making, and interior decorating
Printing
Newspapers, magazines, and books

28. Explain what a direct-reading measuring tool is?

29. Direct-Reading Measuring Tools
Measuring tools where the operator manipulates and reads a measurement
The rule is used for linear measurements
The caliper is used for reading diameters
The square is used for reading angles

30. Explain what an indirect-reading measuring tool is?

31. Indirect-Reading Measuring Tools
Measuring devices that utilize sensors and computers
The vernier scale is used for measuring linear dimensions
The micrometer is used for measuring diameters
The Pythagorean theorem is used to measure angles

32. Describe the purpose of the following tools
Rule
Micrometer
Square
Caliper

33. Quality Control
The process, which involves measuring, and analyzing materials entering the system, works in process, and the outputs of the system
This is an ongoing process designed to ensure that resources are efficiently used and that customers receive functional products.