MI (Diploma Mechanical Engineering 6th)

DETAILED CONTENTS

1.Introduction (03 hrs)

1.1 Meaning of metrology

1.2 Precision and accuracy

1.3 Interchangeability

2.Linear Measurements (08 hrs)

2.1 Working principle and constructional details of:-

2.2 Engineering scale

2.3 Vernier Caliper

2.4 Micrometer

2.5 Height gauge and depth gauge

2.6 Radius gauge and feeler gauge

2.7 Dial indicator

2.8 Comparators ( In general use only)

2.9 Slip Gauges

3.Angular Measurements (07 hrs)

3.1 Working principle and constructional details of:-

3.2 Combination set

3.3 Vernier bevel protractor

3.4 Sine bar

3.5 Taper measurement by rollers

4.Surface Measurements (03 hrs)

4.1 Straight edge

4.2 Try square

4.3 Surface plate( Use and specifications)

5.Limit Gauges (02 hrs)

GO and NO GO gauges

6.Thread Measurements (03 hrs)

6.1 Measurement of thread elements of external and internal threads

6.2 Screw pitch gauge

6.3 Screw thread Micrometer

6.4 Thread limit Gauges

45

7.Gear Tooth Vernier (02 hrs)

8.Surface Finish Measurements (04 hrs)

8.1 Roughness and Waviness Various roughness values-CLA value, RMS

 Value, Mean value.

8.2 Surface roughness measuring instrument- principle of working

9.Other Measuring Instruments (04 hrs)

9.1 Autocollimator

9.2 Tool maker's Microscope

9.3 Profile Projector

9.4 Coordinate Measuring Machine

10. Instrumentation (06 hrs)

10.1 Measurement of Mechanical quantities such as displacement,vibrations,

frequency, pressure, temperature, humidity byelectromechanical transducers

of resistance, capacitanceandinductance type.