HHIP 4401-1812 Black Granite Surface Plate, Grade A, Ledge 0, 18" Length x 12" Width x 3" Height, +/000050" Accuracy, 80 lb. Weight: Industrial & Scientific

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See more product details HHIP grade a ledge 0 black granite surface plate is checked by an auto-collimator for overall accuracy assurance. Granite surface plates meet or exceed Federal specifications ggg-p-463c. Includes a certificate of inspection. Accuracy is +/-.000050". it measures 18" Length by 12" width by 3" height. To calculate the overall star rating and percentage breakdown by star, we don’t use a simple average. Instead, our system considers things like how recent a review is and if the reviewer bought the item on Amazon. It also analyzed reviews to verify trustworthiness.

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