Surface Plates arrow Starrett Superior Black Granite Surface Plates

Superior Black Granite Surface Plates

Part#: Black Granite
Supplier: Starrett
Calibration Certificate: is available at extra cost
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Superior Black Granite Surface Plates minimize thermal expansion and have low water absorption rates to minimize rusting of precision gages. These plates have very little glare resulting to reduce eyestrain. They are available as Laboratory Grade AA, Inspection Grade A and Toolroom Grade B.


  • Our superior black granite has low water absorption rates, thus minimizing the possibility of your precision gages rusting while setting on the plates.
  • This black granite creates little glare resulting in less eyestrain for individuals using the plates.
  • We have chosen our superior black granite with the specific intent of keeping thermal expansion to a minimum.


EDP Surface Size Thickness Flatness Unilateral Tolerance Weight
  in mm in mm in mm lb kg
85034 18x24 450x600 3 75 0.000 0.008 136 62
85061 24x36 600x900 4 100 ..00040 0.0102 366 166

Need to have this new Starrett Black Granite Superior Black Granite Surface Plates calibrated? While this gauge has passed a quality control check, having a calibration certificate for surface plates might be required by your quality control system. Digital Measurement Metrology (owner of is a canadian metrology company with more than 25 years of experience. Our Brampton, Ontario based calibration lab has one of the most comprehensive ISO 17025 accredited calibration scope in Canada.

Do you have an old Starrett gauge to be calibrated? We might be able to calibrate Starrett surface plates (Starrett Black Granite or a different model) and provide an ISO, NIST traceable calibration certificate. Please contact our metrology lab for more info.

Ordering info

SKUDescriptionUnitPriceIn Stock
Black GraniteStarrett Superior Black Granite Surface Platespiece 0
To order Superior Black Granite Surface Plates or technical assistance please contact us.

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