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LINEAR and ANGULAR Measurement
The document provides an overview of linear and angular measurement tools, detailing various types of callipers, micrometers, gauges, and protractors along with their calibration methods. It highlights the precision instruments like vernier callipers and micrometers, and discusses the applications and limitations of sine bars in angular measurement. Additionally, it outlines sources of errors in measurement tools and emphasizes the accuracy required in different measuring contexts.
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LINEAR and ANGULAR Measurement
- 1. l i ne a r m e a s u r e m e n t
- 2. Linear Measurement :- NonPrecision Instruments 1) Calipers 1) firm joint callipers (Inside & Outside callipers) 2) spring type callipers (Inside & Outside callipers) 3) Odd leg callipers 2) Trammels Preicision callipers 1) Vernier calliper Least Count -0.02 mm 1) Type A 2) type B 3) type C A) Vernier height gauge B) Vernier depth gauge
- 3. 2) Micrometers LeastCount -0.01 1)Outsdie Mircometer 2)Inside Micrometer 3)Depth micrometer 4)Bench Micrometer 5)Digital micrometer 6)Micrometer with Dial gauge 7)Screw thead micrometer
- 4. Bore guage 1) DialBore gauge 2) Hemipherical bore gauge Telescopic gauge Slip Gauge Limit gauge 1) Plug gauge 2) Progressive Plug gauge 3) Ring gauge 4) Snap gauge 5) Progressive snap gauge
- 5. Calibration of linearmeasurement 1)Calibration of vernier calliper A)Hardness Test on working faces B) Flatness and squareness of beam C) Flatness of the working surface D) Parallelism of the measuring Jaw E) Accuracy 1)Calibration of micrometer A)Zero error Test B)Backlash error C)Banding Test D)Parallelism error test E) Flatness error test
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- 20. MICROMETER WITH DIALGAUGE
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- 26. APPLICATION OF TELESCOPICBORE GAUGE
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- 28. WRINGING OF SLIPGAUGE
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- 30. LIMIT GAUGE PLUG DOUBLEENDED‘GO’ AND ‘NOGO’ GUAGE
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- 35. DOUBLE ENEDED SNAPGAUGE PROGRESSIVE SNAP GAUGE
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- 38. Angular Measurement :- A)Protractors 1)VernierBevel Protactors 2)Universal bevel protactor 3)Optical bevel protactors b) Sine Bars C)Sine Centers D)Angle Gauges E)Spirit Level F)Clinometer 1)Vernier clinometer 2)Micromter clinometer G) Auto Clinometer H) Angle Dekkor
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- 49. Advantages of sineBar:- 1) It is used for accurate and precise angular measurement 2) It is available easily 3) Its is cheap Disadvantage:- 1)The application is limited for a fixed centre distance between two plugs or rollers. 2) It is difficult to handle and position the slip gauges If the angle exceeds 45 degree sine bar are impracticable and inaccurate. 3) Large angular error may result due to slight error in sine bar
- 50. SOURCES OF ERRORIN SINE BAR :- 1) Error in distance between rollers 2) Error in slip gauges combination used for angle setting 3) Error in equality of size of rollers and cylinders accuracy in the form of rollers. 4) Error in parallelism of roller axes with each other. 5) Error in flatness of the upper surface of the bar
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