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**INTRODUCTION TO SINE BAR**

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SINE BAR USE The sine bar is used either for very accurate angular measurements or for locating work at a given angle. The sine bar is especially useful in measuring or checking angles when the limit of accuracy is 5 minutes or less

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SAMPLES OF SINE BAR

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**Terms and Symbols Diameter: Ø Angle: < Height: H Radius: R.**

Degrees:°

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**SETTING UP A 5-INCH SINE BAR TO GIVEN ANGLE**

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TOOLS NEEDED GAUGE BLOCKS SURFACE GROUND GRANITE TABLE HEIGHT GAUGE

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**REFER TO MACHINIST HAND BOOK pg 1366 or 1121**

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**FIND THE HEIGHT FOR THE FOLLOWING ANGLES**

10°11’= ________ 15°30’=_________ 22°45’= _________ 32°18’=__________ 36° 41’=__________

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