Item Surface Plate Material Granite Application Grade Laboratory Color Pink Edge Style Flat Flatness 0.000100 in/0.0025 mm Grade AA Length 24 in Surface Size 24 in x 36 in 600 mm x 900 mm Thickness 6 in Case Type Crate Flatness Unilateral Tolerance (In.) 0.000100 Flatness Unilateral Tolerance (mm) 0.0025 Includes Case No Standards ASME B89.3.7 2013 GGG-P-463c Surface Size (In.) 24 in x 36 in Surface Size (mm) 600 mm x 900 mm Weight (Kilograms.) 225 kg 36 in Weight (Lbs.) 495