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Introduction to Metrology
Page 2


Introduction to Metrology
Metrology
• Derived form Greek words Such as Metro –
Measurement & Logy - Science.
• BIMP (Bureau of Weights and Measures) – “ 
The Science of Measurement, embracing both 
experimental & theoretical determinations at 
any level of uncertainty in any field of science 
& technology”
Page 3


Introduction to Metrology
Metrology
• Derived form Greek words Such as Metro –
Measurement & Logy - Science.
• BIMP (Bureau of Weights and Measures) – “ 
The Science of Measurement, embracing both 
experimental & theoretical determinations at 
any level of uncertainty in any field of science 
& technology”
Functions of Metrology
• Establishing units of measurement
• Reproducing these units as standards
• Ensuring the uniformity of measurement
• Development of method of measurement
• Analysis of accuracy of methods related to
errors.
Page 4


Introduction to Metrology
Metrology
• Derived form Greek words Such as Metro –
Measurement & Logy - Science.
• BIMP (Bureau of Weights and Measures) – “ 
The Science of Measurement, embracing both 
experimental & theoretical determinations at 
any level of uncertainty in any field of science 
& technology”
Functions of Metrology
• Establishing units of measurement
• Reproducing these units as standards
• Ensuring the uniformity of measurement
• Development of method of measurement
• Analysis of accuracy of methods related to
errors.
1. Units of Measurement
2. Standards of Measurement
Uniformity of Measurement
Page 5


Introduction to Metrology
Metrology
• Derived form Greek words Such as Metro –
Measurement & Logy - Science.
• BIMP (Bureau of Weights and Measures) – “ 
The Science of Measurement, embracing both 
experimental & theoretical determinations at 
any level of uncertainty in any field of science 
& technology”
Functions of Metrology
• Establishing units of measurement
• Reproducing these units as standards
• Ensuring the uniformity of measurement
• Development of method of measurement
• Analysis of accuracy of methods related to
errors.
1. Units of Measurement
2. Standards of Measurement
Uniformity of Measurement
Methods of Measurement
Accuracy
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FAQs on PPT: Standards of Measurement - Manufacturing Engineering - Mechanical Engineering

1. What are the different standards of measurement used in mechanical engineering?
Ans. In mechanical engineering, the commonly used standards of measurement are the International System of Units (SI), which includes units such as meters, kilograms, and seconds, and the British Imperial System, which includes units like feet, pounds, and seconds.
2. Why are standards of measurement important in mechanical engineering?
Ans. Standards of measurement are crucial in mechanical engineering as they ensure consistency, accuracy, and uniformity in physical measurements. This enables engineers to design, manufacture, and test mechanical systems with precision and reliability.
3. How are standards of measurement established in mechanical engineering?
Ans. Standards of measurement in mechanical engineering are established through international organizations such as the International Organization for Standardization (ISO) and national bodies like the National Institute of Standards and Technology (NIST) in the United States. These organizations set and maintain the standards and ensure their conformity across various industries.
4. Are there any specialized standards of measurement for specific areas of mechanical engineering?
Ans. Yes, certain specialized areas of mechanical engineering have their own standards of measurement. For example, in fluid mechanics, units like pascals (Pa) for pressure and cubic meters per second (m^3/s) for flow rate are commonly used. Similarly, in thermodynamics, units like degrees Celsius (°C) for temperature and joules (J) for energy are frequently employed.
5. How do standards of measurement impact international collaboration and trade in mechanical engineering?
Ans. Standards of measurement play a vital role in international collaboration and trade in mechanical engineering. By having standardized units and measurements, engineers and manufacturers from different countries can easily communicate and exchange technical information. This facilitates the global trade of mechanical engineering products and promotes interoperability across borders.
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