1″ x 1″ (50 lp/inch), Ronchi Ruling

Product Details Chrome on Glass High Tolerance Superior to Etched and Filled Rulings Lines Parallel to Edge English and Metric Versions Available High Precision Ronchi Rulings are excellent for evaluating resolution, field distortion, and parfocal stability. The glass targets are coated with vacuum-deposited chrome and have a float glass substrate. English and Metric version are available with various Linepairs Per Inch (LPI) and Linepairs Per Millimeter (lp/mm) measurements. High Precision Ronchi Rulings are offered in 0.5”, 1″, 2″, and 4″ squares. Specifications General Type: English Physical & Mechanical Properties Dimensional Tolerance (inches): ±0.02 Dimensions (inches): 1 x 1 Thickness (mm): 1.50 Parallelism (arcmin): ±60 Parallelism (arcsec): ≤ 2 Dimensional Tolerance (mm): ± 0.02 Line to Line Parallelism (arcsec): ≤2 Parallelism of Pattern to Substrate (°): ±1 Optical Properties Coating: Vacuum Deposited Chrome, OD >3.0 Substrate: Many glass manufacturers offer the same material characteristics under different trade names. Learn More Float Glass Optical Density OD (Average): 3.00 Surface Quality: 20-10 Frequency (lp/inch): 50.00 Surface Flatness (P-V): 1λ Regulatory Compliance RoHS 2015: Compliant × Certificate of Conformance: View × Reach 240: Compliant ×