INTRODUCTION TO SINE BAR

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Presentation transcript:

INTRODUCTION TO SINE BAR

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

SAMPLES OF SINE BAR

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

SETTING UP A 5-INCH SINE BAR TO GIVEN ANGLE

TOOLS NEEDED GAUGE BLOCKS SURFACE GROUND GRANITE TABLE HEIGHT GAUGE

REFER TO MACHINIST HAND BOOK pg 1366 or 1121

FIND THE HEIGHT FOR THE FOLLOWING ANGLES 10°11’= ________ 15°30’=_________ 22°45’= _________ 32°18’=__________ 36° 41’=__________

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