In this ppt according to BE syllabus linear and angular measurement is try to describe. The instruments of this measurements is described in this ppt.

1. l i n e a r m e a s u r e m e n t

2. Linear Measurement :-
Non Precision 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 Least Count -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) Dial Bore 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 linear measurement
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

8. VERNIER DEPTH GAUGE

14. OUTSIDE MICROMETER

15. INSIDE MICROMETER

17. DEPTH MICROMETER

18. BENCH MICROMETER

19. DIGITAL
MICROMETER

20. MICROMETER WITH DIAL GAUGE

21. SCREW THREAD MICROMETER

22. DIAL BORE GAUGE

23. HEMISPERICAL BORE
GAUGE

24. TELESCOPIC GAUGE

25. TELESCOPIC BORE GAUGE

26. APPLICATION OF TELESCOPIC BORE GAUGE

27. SLIP GAUGE

28. WRINGING OF SLIP GAUGE

29. SLIP GAUGES

30. LIMIT GAUGE
PLUG DOUBLE ENDED‘GO’ AND ‘NOGO’ GUAGE

31. PROGRESSIVE PLUG
GAUGE

32. TAPER PLUG GAUGE

33. RING GAUGE

34. RING GAUGE

35. DOUBLE ENEDED SNAP GAUGE
PROGRESSIVE SNAP GAUGE

36. ADJUSTABLE SNAP GAUGE

37. Angular measurement

38. Angular Measurement :-
A)Protractors
1)Vernier Bevel 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

43. APPLICATION OF
SLIP GAUGES

49. Advantages of sine Bar:-
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 ERROR IN 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

51. SINE CENTRE

57. ANGLE GAUGES

59. SPIRIT LEVEL

67. VERNIER CLINOMETER

69. MICROMETER CLINOMETER

71. AUTO COLLIMATOR