27mm Diameter Contact Reticle, English Index Square Scale

Product Details English: 0.5 Inch square in 0.05″ squares. Specifications General Type: English Index Squares Physical & Mechanical Properties Diameter (mm): 27.00 ±0.05 Thickness (mm): 2.28 ±0.127 Line to Line Accuracy (μm): ±2 Centering (mm): 0.25 Line Thickness (μm): 25.00 Line Thickness Tolerance (μm): ±13 Optical Properties Angle Tolerance (arcsec): ±1 Surface Quality: 60-40 Surface Flatness (P-V): 3 – 4λ Regulatory Compliance RoHS 2015: Compliant × Certificate of Conformance: View × Reach 240: Compliant ×