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Geometric Forms of Measurement

Geometric Forms of Measurement. Different Geometric Forms. Straightness Flatness Circularity Parallelism Squreness. Straightness. A line is said to be straight over a given length if its deviation with respect to ideal reference line are within the specific tolerance limit.

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Geometric Forms of Measurement

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  1. Geometric Forms of Measurement

  2. Different Geometric Forms • Straightness • Flatness • Circularity • Parallelism • Squreness

  3. Straightness • A line is said to be straight over a given length if its deviation with respect to ideal reference line are within the specific tolerance limit

  4. Test for Straightness • Using the straight edge • Wedge method • Use of spirit level

  5. Flatness • Flatness It is defined as minimum distance between two planes within which all the points on a surface lie. A surface along which all the points lie along single plane is called as perfectly flat surface.

  6. Test for Flatness • Using a surface plate • Straight edge • Dial gauge • Spirit level • Autocollimator • Interference method

  7. Squareness • Checking of squareness or squareness testing implies checking weather the one plane is right angle to another.

  8. Test for Squareness • Try square • Combination square • Indicator method • Autocollimator

  9. Parallelism • Two line axis or plane are said to be parallel two each other if the distance measure between them in a perpendicular plane remain same.

  10. Using the straight edge

  11. Using the straight edge

  12. Autocollimator

  13. Autocollimator

  14. Spirit Level

  15. Surface Plate

  16. Dial Indicator

  17. Try Square

  18. Two Plane

  19. Circularity checking by V block and dial

  20. Polarography

  21. Parallelismchecking by spirit level

  22. Parallelismchecking by Dial Gauge

  23. Circularity checking

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