Precise Sine Plate & Sine Bars

• Measures angles accurately.
• Sine bar and rolls are hardened and ground for extreme accuracy.
• Parallelism: .00004″
• Top surface accuracy: .00003″ per inch of length
• Center to center distance between center of rolls accurate within .0002″.
• Flange on the end to rest work
• Holes furnished throughout unit to facilitate clamping.

• 57-020-220Perfect for angular inspection and measurement.
• Hardened & Precision Ground
• Width: 1″
• Dimensions: 5″ x 1″ x 1″
• 5″ distance between center of rolls.
• Parallelism: .0002″
• 5/8″ diameter rolls.
• Accuracy between rolls: .0003″