Exterior Roughness Comparator Sample Block Set, 30-Piece Ra 0.05–12.5 μm Machined for SURFACE Finish Reference for Visual & Microscopic Inspection, Complies with SAE Standards

Specifications:The exterior roughness comparator is used to check the smoothness of mechanical workpieces by comparison, while the visual inspection or microscope is used to compare and test the degree of exterior roughness.features:RUG-100: notebook sample block (turning, end milling, flat milling, exterior grinding, external grinding, polishing)The notebook sample block contains standards for the six most important processing for methods among the popular "AA" values. All 30 samples were calibrated with for uAA (arithmetic mean) and metric equivalent um Ra.Sample exterior roughness comparator 30 pieces of composite bag fixing gauges3 Flat grinding: 2,4,8; 7/8 "x 3/8" each; Each type of exterior finish is a true and consistent reproduction, with a true idea of the feel, appearance and texture of machined partsCompare conveniently and quickly; Comply with S.A.E and specificationsOverall wallet size (fully enclosed) L x W x H (inches): 6 x 3 x 3/8 * estimated *; Unit weight: 14 ounces * estimate only*The package includes:A set of 30 sample pieces

• RA VALUE COMPARISON: Quickly assess for SURFACE finish quality by direct visual or microscopic comparison against 30 calibrated Ra standards from 0.05 to 12.5 µm
• MACHINING PROCESS REFERENCE: Identify turning, end milling, flat milling, exterior grinding, external grinding, and polishing finishes with true-to-life texture and appearance
• LONG LASTING METAL BLOCKS: Precision-machined aluminum alloyretain consistent for SURFACE integrity for repeatable, reliable inspections over time
• PORTABLE WALLET DESIGN: Compact 6 x 3 x 3/8 inch fully enclosed case holds all 30 samples securely—ideal for shop floor, lab, or field use
• COMPATIBLE WITH SAE STANDARDS: Each sample meets SAE for SURFACE roughness specifications for arithmetic mean (Ra) measurement and for general industrial inspection workflows