1. Metrology Basics
L : 1 Metrology Basics
Learning Objectives :
Introduction :
Metrology :
Metrology is the science of measurement. Metrology is primarily
concerned with the establishment, reproduction, conservation and transfer of units of
measurement and their standards.
Necessity Of metrology:
1. Metrology can be used for selection of proper measuring instrument in
industries.
2. Metrology can be used for deciding the proper measuring standards.
3. Metrology can be used for minimizing cost of inspection.
4. Metrology can be used for determining process capabilities.
5. Metrology can be used for deciding or finding out tolerances.
6. Metrology can be used for maintaining accuracy and precision at the time of
inspection.
Important Points discussed in this Topic :
1. Introduction and Definition, Objective, Types - Legal, Scientific, Deterministic, Industrial.
2. Why we carry out Inspection in manufacturing process, various objectives behind it.
3. Terms used in measuring process.
4. Errors occurring in measurement process. How we can take care to eliminate these errors.
5. What should be the selection criteria for measuring instruments, care of instruments.
6. Classification of measuring equipments :
7. Basic Measuring Instruments used :
a. Vernier Caliper
b. Vernier Height Guage
c. Vernier Depth Guage
d. Micrometer
e. Inside Micrometer
f. Tube Micrometer
g. Telescope Guage
h. Radius Guage
i. Filler Guage
j. Screw Pitch Guage
8. Standards of Measurement - Line standard, End Standard, and Wavelength Standard.
9. Slip Guages, Wringing process, Accessories.
10. Studied construction and operation of various types of Comparaters such as Mechanical comparator, Electronic Comparator, Electrical Comparator, Pneumatic Comparator, Optical Comparator, and Combined Comparators.
Learning Objectives :
- To understand the basics of Metrology & calculate the least count of measuring instruments.
- To understand various standards, comparators, gauge selection and limit system.
Introduction :
Metrology :
Metrology is the science of measurement. Metrology is primarily
concerned with the establishment, reproduction, conservation and transfer of units of
measurement and their standards.
Necessity Of metrology:
1. Metrology can be used for selection of proper measuring instrument in
industries.
2. Metrology can be used for deciding the proper measuring standards.
3. Metrology can be used for minimizing cost of inspection.
4. Metrology can be used for determining process capabilities.
5. Metrology can be used for deciding or finding out tolerances.
6. Metrology can be used for maintaining accuracy and precision at the time of
inspection.
Important Points discussed in this Topic :
1. Introduction and Definition, Objective, Types - Legal, Scientific, Deterministic, Industrial.
2. Why we carry out Inspection in manufacturing process, various objectives behind it.
3. Terms used in measuring process.
4. Errors occurring in measurement process. How we can take care to eliminate these errors.
5. What should be the selection criteria for measuring instruments, care of instruments.
6. Classification of measuring equipments :
7. Basic Measuring Instruments used :
a. Vernier Caliper
b. Vernier Height Guage
c. Vernier Depth Guage
d. Micrometer
e. Inside Micrometer
f. Tube Micrometer
g. Telescope Guage
h. Radius Guage
i. Filler Guage
j. Screw Pitch Guage
8. Standards of Measurement - Line standard, End Standard, and Wavelength Standard.
9. Slip Guages, Wringing process, Accessories.
10. Studied construction and operation of various types of Comparaters such as Mechanical comparator, Electronic Comparator, Electrical Comparator, Pneumatic Comparator, Optical Comparator, and Combined Comparators.
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