INTRODUCTION TO SINE BAR

1
INTRODUCTION TOSINE 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 lt
• Height H
• Radius R.
• Degrees

5
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

• 1011 ________
• 1530_________
• 2245 _________
• 3218__________
• 36 41__________