UNIT-I SYSTEMS OF LIMITS AND FITS

1.1 Systems Of Limits And Fits: Introduction, Nominal Size, Tolerance, Limits, Deviations, Fits

1.2 Unilateral And Bilateral Tolerance System, Hole And Shaft Basis Systems- Interchangeability

1.3 Determistic & Statistical Tolerancing, Selective Assembly

1.4 International Standard System Of Tolerances, Selection Of Limits And Tolerances For Correct Functioning

UNIT-II LINEAR MEASUREMENT AND MEASUREMENT OF ANGLES AND TAPERS , LIMIT GAUGES:

2.1 Linear Measurement:Length Standards, End Standards, Slip Gauges- Calibration Of The Slip Gauges, Dial Indicators, Micrometers.

2.2 Measurement Of Angles And Tapers: Different Methods – Bevel Protractor, Angle Slip Gauges- Angle Dekkor- Spirit Levels- Sine Bar- Sine Table, Rollers And Spheres Used To Measure Angles And Tapers.

2.3 Limit Gauges: Taylor’s Principle – Design Of Go And No Go Gauges; Plug, Ring, Snap, Gap, Taper, Profile And Position Gauges.

UNIT-III OPTICAL MEASURING INSTRUMENTS AND INTERFEROMETRY:

3.1 Optical Measuring Instruments: Tools Maker’s Microscope And Uses - Auto Collimators, Optical Projector, Optical Flats And Their Uses.

3.2 Interferometry: Interference Of Light, Michaleson’s Interferometer, Npl Flatness Interferometer, And Npl Gauge Interferometer.

UNIT-IV SURFACE ROUGHNESS MEASUREMENT AND COMPARATORS

4.1 Surface Roughness Measurement: Differences Between Surface Roughness And Surface Waviness - Numerical Assessment Of Surface Finish-CLA, Rt., R.M.S, Rz, R10 Values,

4.2 Method Of Measurement Of Surface Finish – Profilograph, Talysurf, ISI Symbols For Indication Of Surface Finish.

4.3 Comparators: Types - Mechanical, Optical , Electrical And Electronic, Pneumatic Comparators And Their Uses.

UNIT – V GEAR MEASUREMENT AND SCREW THREAD MEASUREMENT

5.1 Gear Measurement: Nomenclature Of Gear Tooth, Tooth Thickness Measurement With Gear Tooth Vernier & Flange Micro Meter, Pitch Measurement,

5.2 Screw Thread Measurement: Elements Of Measurement – Errors In Screw Threads-Effective diameter error

5.3 Concept Of Virtual Effective Diameter, Measurement Of Effective Diameter, Angle Of Thread And Thread Pitch, And Profile Thread Gauges.

UNIT – VI FLATNESS MEASUREMENT AND MACHINE TOOL ALIGNMENT TESTS:

6.1 Flatness Measurement: Measurement Of Flatness Of Surfaces

6.2 Instruments Used- Straight Edges- Surface Plates – Auto Collimator.

6.3 Machine Tool Alignment Tests:Principles Of Machine Tool Alignment Testing On Lathe, Drilling And Milling Machines.