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angle metrology

Angular measurement. Angle is a ambiguous term when compared with concepts of length and diameter.The term angle is used to refer to any one of the following: The angular separation of intersecting linesThe angular spacing of points on the circumference of a circle The deviation from a reference line or plane or other datumThe twist of a shaft subjected to torque..

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angle metrology

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    1. Angle Metrology

    3. Units of angular measurement Radian The radian is defined as the angle subtended at the center of a circle by an arc equal in length to the radius, i.e. the angle subtended by the complete circumference will be 2p radians. Two measurement systems: Sexagesimal system This system divides the right angle into 90 degrees with the further division of the degree into 60 minutes and the minute into 60 seconds. Centesimal system This system divides the right angle into 100 equal parts (grades) with a further subdivision of the grade into 100 minutes and the minute into 100 seconds

    4. Angle measurement Fixed Taper gages Angle gage blocks Sine bar Spirit level Electronic level Optical Instruments Auto collimator Angle Dekkor

    5. Angle Measuring Systems and Techniques

    6. Angle Gage Blocks

    7. Individual blocks in a set

    8. Combination of angle gages

    9. Applications of angle blocks

    10. Applications of angle blocks

    11. Adjustable Angular Reference Bodies

    12. Cone angle measurement

    13. Accuracy of Sine Bars The accuracy of sine bar measurement is governed by the straightness of the base generator the sensitivity and accuracy of the dial gage the magnitude of the angle being measured the degree of alignment of the test piece with the longitudinal axis of sine bar.

    14. Spirit level

    15. Electronic Levels

    16. Electronic Level

    17. Electronic Level

    18. Advantages of Electronic Levels Accuracy of settings. Stability. Speed of response. Remote display

    19. Optical Instruments

    20. Auto-collimator

    21. Angle Dekkor

    22. Angle Dekkor

    23. Circular Division

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