ITEM: Inspection Surface Plate: 24 Long, 6 Thick, Granite, No Ledge, A Grade STARRETT. MANUFACTURER: STARRETT. BRAND: Starrett. MANUFACTURER PART: 88631. Inspection Surface Plate: 24 Long, 6 Thick, Granite, No Ledge, A Grade 0.000150 Unilateral Tolerance, Includes NIST Traceability CertificateCATEGORIES: Maintenance, Repair and Operational (MRO) Supplies. Inspecting, Detecting & Testing Instruments. Optical Inspection Equipment. Inspection Surface Plates, Stands & Accessories. KEYWORDS: StarrettInspecting, Detecting & Testing InstrumentsOptical Inspection EquipmentInspection Surface Plates, Stands & AccessoriesInspection Surface Plates.