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.
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
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.