ITEM: 36 Long x 24 Wide x 4 Thick, Granite Inspection Surface Plate SPI. MANUFACTURER: SPI. BRAND: SPI. MANUFACTURER PART: 24X36X4A2. 36 Long x 24 Wide x 4 Thick, Granite Inspection Surface Plate 2 Ledges, A Inspection Grade, 0.0001 Unilateral Tolerance, Includes NIST Traceability Certificate (MOQ1, Pkg Qty1)CATEGORIES: Maintenance, Repair and Operational (MRO) Supplies. Inspecting, Detecting & Testing Instruments. Optical Inspection Equipment. Inspection Surface Plates, Stands & Accessories. TOTAL RECYCLED CONTENT: 10.00%. POSTCONSUMER RECYCLED CONTENT: 1.00%. KEYWORDS: SPIInspecting, Detecting & Testing InstrumentsOptical Inspection EquipmentInspection Surface Plates, Stands & AccessoriesInspection Surface Plates.