Transcription of UNIT 6 ANGULAR MEASURING DEVICES Angular Measuring …
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UNIT 6 ANGULAR MEASURING DEVICES Angular Measuring …
75 ANGULAR MEASURING DEVICES UNIT 6 ANGULAR MEASURING DEVICES Structure Introduction Objectives Line Standard ANGULAR MEASURING DEVICES Protractors Universal Bevel Protractors Face Standard ANGULAR MEASURING DEVICES Measurement of Inclines Spirit Level Clinometer Angle Comparators Summary Key Words Answers to SAQs INTRODUCTION There are a wide variety of geometric features that are measured in ANGULAR units. These varieties include ANGULAR separation of bounding planes, ANGULAR spacing conditions related to circle, digression from a basic direction etc. Because of these diverse geometrical forms, different types of methods and equipment are available to measure angles in common ANGULAR units of degree, minute and second. Several factors come into picture in selection of suitable ANGULAR MEASURING instruments.
76 Metrology and Instrumentation 6.2.1 Protractors It is the simplest instrument for measuring angles between two faces. It consists of two arms and an engraved circular scale.
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