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The best calibration surface plates you can buy
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Best budget pick
Grizzly Industrial H7760 6" x 8" Cast Iron Surface Plate, Grade B
Affordable small cast iron plate with Grade B precision ideal for light inspection and layout work.
- Low cost
- Good accuracy for its size
- Rust-resistant finish
- Small surface area
- Not suitable for large parts
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Best overall HHIPStandards Complete Granite Surface Plate 24" x 24" x 4", Grade AA
Large precision granite plate with Grade AA accuracy for professional inspection and quality control.
- High accuracy
- Stable and durable
- Large working area
- Heavy and bulky
- Premium price
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Best for hobbyists LLDSIMEXMSC Industrial Supply Co. 9" x 12" Granite Surface Plate, Grade B
Mid-size granite plate offering reliable flatness for home workshops and small machine shops.
- Smooth surface
- Affordable for the size
- Includes certificate
- Grade B not for highest precision
- Limited by weight
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Best premium brand StarrettStarrett 813B-48 12" x 18" Black Granite Surface Plate, Grade B
Trusted Starrett black granite plate with ultra-fine grain for minimal wear and high stability.
- High-quality granite
- Precision ground
- Long-lasting
- Expensive
- Easily stained without oil
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Best value
Enco 6" x 8" Cast Iron Surface Plate, Grade A
Compact cast iron plate with Grade A accuracy for small part inspection at a great price.
- Grade A precision
- Compact size
- Durable cast iron
- Small working area
- Can rust without care
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Best precision
Mitutoyo Granite Surface Plate, 12" x 18" x 3", Grade 0
Top-tier Mitutoyo granite plate with Grade 0 accuracy for metrology labs and demanding applications.
- Exceptional accuracy
- Excellent flatness stability
- Renowned brand
- Very expensive
- Heavy and bulky
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Best mini plate uxcellUxcell 150x150x50mm Granite Surface Plate, Grade B
Ultra-compact granite plate for small part inspection and layout on a tight budget.
- Very affordable
- Portable size
- Decent flatness for small jobs
- Tiny surface
- Grade B limits precision
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Best mid-range WOODRIVERAccusize Industrial Tools Granite Surface Plate, 8" x 12" x 2", Grade A
Good quality Grade A granite plate at a reasonable price, suitable for inspection and gage calibration.
- Good accuracy
- Solid build
- Fair price
- Not as large as professional plates
- Edge might chip if dropped
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