Back close

Course Detail

Course Name Metrology and Measurements
Course Code 15MEC314
Program B. Tech. in Mechanical Engineering
Semester Six
Year Taught 2019


Unit 1

Concept of Metrology: Definition and concept of Metrology – need of Inspection – Generalized measurement system – Units and standards – measuring instruments; sensitivity, stability, range, accuracy and precision, static and dynamic response, repeatability – systematic and random errors – correction; calibration.

Linear Measurements: Vernier-caliper, Vernier depth gauge, Micrometer, Depth micrometer, Digital micrometer. Slip gauges: wringing of slip gauges and classification – Tool maker’s microscope. Dial indicators – classification and working mechanism. Limit gauges; Comparators: Mechanical, pneumatic and electrical types, applications – Height Gauge, Bore Gauge and Feeler Gauge.

Angular Measurements: Uses of the Vernier Bevel protractor, Universal Bevel protractor and Optical Bevel protractor. Sine bars – Uses and limitations of sine bar – Taper measurements. Sources of errors in sine bars, Sine Centre and Sine tables – Auto collimator and its applications.

Unit 2

Surface Texture and Screw Thread Measurement: Elements of surface texture – Evaluation of surface finish – Peak to valley height – Talysurf, Tomlinson surface meter – Screw thread terminology – Measurement of various elements of thread; Measurement of thread angle by two wire and Three wire methods; Thread gauges and floating carriage micrometer.

Form Measurements: Measurement of Straightness, Flatness, Parallelism, squareness testing, Roundness testing – Radius Gauge, Wire Gauge, etc.

Signal Representation – Signal conditioners, filters, ADC, DAC

Unit 3

W heatstone bridge, use of bridge circuits – Displacement measurement – Potentiometer – LVDT, Piezo electric type – Velocity measurement.

Nature of Vibration, accelerometers.

Strain measurement types, mechanical strain gauge, Electrical strain gauge, selection of strain gauge.

Temperature measurement: Bimetallic thermometer, Platinum resistance thermometers, Thermocouples and Pyrometers – Pressure fundamentals; Elastic transducers, thermal conductivity gauges, Vacuum pressure measurement, Flow measurement – Ultrasonic flow meter – turbine type meters – Hot wire anemometers.

Text Books

  1. J. F. W. Gayler, and C. R. Shotbolt – ‘Metrology for Engineers’ ELBS -1990
  2. JONES’ – ‘Instrument Technology’ Volume – 1, Mechanical Measurement’ – Edited by B. E. Noltingk – ELBS – 4th Edition


  • I. C. Gupta – ‘Text Book of Engineering Metrology’ – Dhanpat Rai, Publishing Company – 2011 – 7th Edition
  • Alan S. Morris – ‘The Principles of Measurements and Instrumentation’ – Prentice-Hall of India – 2001
  • R. K. Jain – ‘Engineering Metrology’ Khanna Publishers, Delhi – 2009 – 5th Edition
  • Gupta S. C. – ‘Engineering Metrology’ – Dhanpatrai Publications – 2010
  • Dr. D. S. Kumar – ‘Mechanical Measurements & Control’ – Metropolitan Book Co. Private Ltd. – ISBN 81-200 0214-8
  • Bechwith-Marangoni-Lienhard – ‘Mechanical Measurements’ – Pearson Education Asia – 2011 – 6th Edition Reprint.

DISCLAIMER: The appearance of external links on this web site does not constitute endorsement by the School of Biotechnology/Amrita Vishwa Vidyapeetham or the information, products or services contained therein. For other than authorized activities, the Amrita Vishwa Vidyapeetham does not exercise any editorial control over the information you may find at these locations. These links are provided consistent with the stated purpose of this web site.

Admissions Apply Now