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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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6.1.2 Angles. Converting to degrees Angles in radian measure do not always convert to angles in degrees without decimals, we must convert the decimal.

6.1.2 Angles. Converting to degrees Angles in radian measure do not always convert to angles in degrees without decimals, we must convert the decimal.

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