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Metrology » Shop Tools » Sine Bars and Angle Blocks Fowler

Fowler Compound Sine Plate 57-375-001-0

Fowler compound sine plates are designed to accommodate a wide variety of inspection, grinding and machining jobs.  The bi-directional plates allow angles to be set front to back or side to side for simple angles or a combination of the two for true compound angles.  The top plates have adjustable height and self-storing rails along with two locking straps that always remain below the surface.


• Built-in .200" minute step in front gage block roll.

• Constructed of steel, hardened to RC58-62.

• Precision ground square and parallel within .0002"-.0003" depending on the size.

• Can be used with the #57-470-series Angle Plates.

• Roll accuracy within .0002".

• Models 6" x 6" or smaller have 1⁄4-20 tapped holes in top plate. Larger models have 3⁄8-16 tapped holes.

Sine plate dimensions: 6″ x 6″ x 3-1/8″
Center distance of rolls: 5″

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