Insize Granite Surface Plate,Gray,Type 6-Face 6900-A11

Item Surface Plate, Long Form Calibration Certificate Yes, Material Granite, Application Grade Inspection, Color Gray, Edge Style Flat, Flatness 0.00012 in/0.0030 mm, Grade A, Length 12 in, Surface Size 12 in x 18 in; 300 mm x 450 mm, Thickness 3 in, Flatness Unilateral Tolerance (In.) 0.00012, Flatness Unilateral Tolerance (mm) 0.0030, Standards GGG-P-463c, Surface Size (In.) 12 in x 18 in, Surface Size (mm) 304 mm x 457 mm, Weight (Kilograms.) 42 kg, 18 in, Weight (Lbs.) 32 lb