Sine Bars Instrument Information
A metallic bar, with a metallic cylinder at each end, with their centers precisely distanced. The top of the bar is parallel to the centers of the cylinders. The sine bar is used with a gage block, raising one end of the bar a known distance off the level surface. Trigonometry is then used to calculate the hypotenuse or angle created.
Common Uses
- Creating a very precise angle for laying out machined parts yet to be machined.
- Measuring very precise angles, such as on a tapered part.
- Measuring the hypotenuse of a triangle.
Common Types
Sine center
Sine table
Compound sine table
Measurement Parameter
- Angle (Degrees, Minutes, Seconds)
Gage Type
- Attribute
- Layout
Calibration Discipline
Calibration Equipment Used
- Gage Blocks
