High Precision Ronchi Rulings

  • New Metric Versions Available
  • Chrome on Glass
  • High Tolerance
  • Superior to Etched and Filled Rulings
  • Lines Parallel to Edge
  • English and Metric Versions

High Precision Ronchi Ruling Glass targets are excellent for evaluating resolution, field distortion, and parfocal stability. Many different Linepairs Per Inch (LPI) and Linepairs Per Millimeter (LP/mm) versions available. 1", 2", 4" and 6" squares available.

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Description Stock No. Price In Stock  
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Ronchi Ruling 0.5" X 0.5" (72 lp/mm)
NT66-339 $90.00 Click to receive an email with delivery information. Click to add this item to your cart.
Type Metric
Dimensions (inches) 0.5 x 0.5
Dimensional Tolerance (inches) ±0.02
Thickness (mm) 1.5
Parallelism (arcminutes) ±60
Line to Line Parallelism (arcseconds) ≤2
Surface Accuracy (λ) 1 per inch
Surface Quality 60-40
Frequency (lp/mm) 72
Coating Vacuum Deposited Chrome
RoHS Compliant
Ronchi Ruling 0.5" X 0.5" (72 lp/mm)
NT66-340 $95.00 Click to receive an email with delivery information. Click to add this item to your cart.
Type Metric
Dimensions (inches) 0.5 x 0.5
Dimensional Tolerance (inches) ±0.02
Thickness (mm) 1.5
Parallelism (arcminutes) ±60
Line to Line Parallelism (arcseconds) ≤2
Surface Accuracy (λ) 1 per inch
Surface Quality 60-40
Frequency (lp/mm) 72
Coating Vacuum Deposited Chrome
RoHS Compliant
Ronchi Ruling 0.5" X 0.5" (100 lp/mm)
NT66-341 $115.00 In stock and ready to ship. Click to add this item to your cart.
Type Metric
Dimensions (inches) 0.5 x 0.5
Dimensional Tolerance (inches) ±0.02
Thickness (mm) 1.5
Parallelism (arcminutes) ±60
Line to Line Parallelism (arcseconds) ≤2
Surface Accuracy (λ) 1 per inch
Surface Quality 60-40
Frequency (lp/mm) 100
Coating Vacuum Deposited Chrome
RoHS Compliant
Ronchi Ruling 0.5" X 0.5" (120 lp/mm)
NT66-342 $125.00 In stock and ready to ship. Click to add this item to your cart.
Type Metric
Dimensions (inches) 0.5 x 0.5
Dimensional Tolerance (inches) ±0.02
Thickness (mm) 1.5
Parallelism (arcminutes) ±60
Line to Line Parallelism (arcseconds) ≤2
Surface Accuracy (λ) 1 per inch
Surface Quality 60-40
Frequency (lp/mm) 120
Coating Vacuum Deposited Chrome
RoHS Compliant
Ronchi Ruling 0.5" X 0.5" (145 lp/mm)
NT66-343 $135.00 In stock and ready to ship. Click to add this item to your cart.
Type Metric
Dimensions (inches) 0.5 x 0.5
Dimensional Tolerance (inches) ±0.02
Thickness (mm) 1.5
Parallelism (arcminutes) ±60
Line to Line Parallelism (arcseconds) ≤2
Surface Accuracy (λ) 1 per inch
Surface Quality 60-40
Frequency (lp/mm) 145
Coating Vacuum Deposited Chrome
RoHS Compliant
Ronchi Ruling 0.5" X 0.5" (165 lp/mm)
NT66-344 $140.00 In stock and ready to ship. Click to add this item to your cart.
Type Metric
Dimensions (inches) 0.5 x 0.5
Dimensional Tolerance (inches) ±0.02
Thickness (mm) 1.5
Parallelism (arcminutes) ±60
Line to Line Parallelism (arcseconds) ≤2
Surface Accuracy (λ) 1 per inch
Surface Quality 60-40
Frequency (lp/mm) 165
Coating Vacuum Deposited Chrome
RoHS Compliant
Ronchi Ruling 0.5" X 0.5" (200 lp/mm)
NT66-345 $150.00 In stock and ready to ship. Click to add this item to your cart.
Type Metric
Dimensions (inches) 0.5 x 0.5
Dimensional Tolerance (inches) ±0.02
Thickness (mm) 1.5
Parallelism (arcminutes) ±60
Line to Line Parallelism (arcseconds) ≤2
Surface Accuracy (λ) 1 per inch
Surface Quality 60-40
Frequency (lp/mm) 200
Coating Vacuum Deposited Chrome
RoHS Compliant
Ronchi Ruling 0.5" X 0.5" (240 lp/mm)
NT66-346 $180.00 In stock and ready to ship. Click to add this item to your cart.
Type Metric
Dimensions (inches) 0.5 x 0.5
Dimensional Tolerance (inches) ±0.02
Thickness (mm) 1.5
Parallelism (arcminutes) ±60
Line to Line Parallelism (arcseconds) ≤2
Surface Accuracy (λ) 1 per inch
Surface Quality 60-40
Frequency (lp/mm) 240
Coating Vacuum Deposited Chrome
RoHS Compliant
Ronchi Ruling 1" x 1" (5 lp/mm)
NT58-775 $50.00 Click to receive an email with delivery information. Click to add this item to your cart.
Type Metric
Dimensions (inches) 1 x 1
Dimensional Tolerance (inches) ±0.02
Thickness (mm) 1.5
Parallelism (arcminutes) ±60
Line to Line Parallelism (arcseconds) ≤2
Surface Accuracy (λ) 1 per inch
Surface Quality 60-40
Frequency (lp/mm) 5
Coating Vacuum Deposited Chrome
RoHS Compliant
Ronchi Ruling 1" x 1" (10 lp/mm)
NT58-776 $55.00 In stock and ready to ship. Click to add this item to your cart.
Type Metric
Dimensions (inches) 1 x 1
Dimensional Tolerance (inches) ±0.02
Thickness (mm) 1.5
Parallelism (arcminutes) ±60
Line to Line Parallelism (arcseconds) ≤2
Surface Accuracy (λ) 1 per inch
Surface Quality 60-40
Frequency (lp/mm) 10
Coating Vacuum Deposited Chrome
RoHS Compliant
Ronchi Ruling 1" x 1" (20 lp/mm)
NT58-777 $75.00 In stock and ready to ship. Click to add this item to your cart.
Type Metric
Dimensions (inches) 1 x 1
Dimensional Tolerance (inches) ±0.02
Thickness (mm) 1.5
Parallelism (arcminutes) ±60
Line to Line Parallelism (arcseconds) ≤2
Surface Accuracy (λ) 1 per inch
Surface Quality 60-40
Frequency (lp/mm) 20
Coating Vacuum Deposited Chrome
RoHS Compliant
Ronchi Ruling 1" X 1" (30 lp/mm)
NT66-347 $90.00 Click to receive an email with delivery information. Click to add this item to your cart.
Type Metric
Dimensions (inches) 1 x 1
Dimensional Tolerance (inches) ±0.02
Thickness (mm) 1.5
Parallelism (arcminutes) ±60
Line to Line Parallelism (arcseconds) ≤2
Surface Accuracy (λ) 1 per inch
Surface Quality 60-40
Frequency (lp/mm) 30
Coating Vacuum Deposited Chrome
RoHS Compliant
Ronchi Ruling 1" x 1" (40 lp/mm)
NT58-778 $130.00 In stock and ready to ship. Click to add this item to your cart.
Type Metric
Dimensions (inches) 1 x 1
Dimensional Tolerance (inches) ±0.02
Thickness (mm) 1.5
Parallelism (arcminutes) ±60
Line to Line Parallelism (arcseconds) ≤2
Surface Accuracy (λ) 1 per inch
Surface Quality 60-40
Frequency (lp/mm) 40
Coating Vacuum Deposited Chrome
RoHS Compliant
Ronchi Ruling 1" x 1" (50 lp/mm)
NT58-779 $140.00 Click to receive an email with delivery information. Click to add this item to your cart.
Type Metric
Dimensions (inches) 1 x 1
Dimensional Tolerance (inches) ±0.02
Thickness (mm) 1.5
Parallelism (arcminutes) ±60
Line to Line Parallelism (arcseconds) ≤2
Surface Accuracy (λ) 1 per inch
Surface Quality 60-40
Frequency (lp/mm) 50
Coating Vacuum Deposited Chrome
RoHS Compliant
Ronchi Ruling 1" X 1" (60 lp/mm)
NT66-348 $135.00 In stock and ready to ship. Click to add this item to your cart.
Type Metric
Dimensions (inches) 1 x 1
Dimensional Tolerance (inches) ±0.02
Thickness (mm) 1.5
Parallelism (arcminutes) ±60
Line to Line Parallelism (arcseconds) ≤2
Surface Accuracy (λ) 1 per inch
Surface Quality 60-40
Frequency (lp/mm) 60
Coating Vacuum Deposited Chrome
RoHS Compliant
Ronchi Ruling 1" X 1" (72 lp/mm)
NT66-349 $140.00 In stock and ready to ship. Click to add this item to your cart.
Type Metric
Dimensions (inches) 1 x 1
Dimensional Tolerance (inches) ±0.02
Thickness (mm) 1.5
Parallelism (arcminutes) ±60
Line to Line Parallelism (arcseconds) ≤2
Surface Accuracy (λ) 1 per inch
Surface Quality 60-40
Frequency (lp/mm) 72
Coating Vacuum Deposited Chrome
RoHS Compliant
Ronchi Ruling 1" x 1" (80 lp/mm)
NT62-199 $150.00 In stock and ready to ship. Click to add this item to your cart.
Type Metric
Dimensions (inches) 1” x 1”
Dimensional Tolerance (inches) ±0.02
Thickness (mm) 1.5
Parallelism (arcminutes) ±60
Line to Line Parallelism (arcseconds) ≤2
Surface Accuracy (λ) 1 per inch
Surface Quality 60-40
Frequency (lp/mm) 5 lp/mm
Coating Vacuum Deposited Chrome
RoHS Exempt
Ronchi Ruling 1" x 1" (100 lp/mm)
NT58-780 $205.00 In stock and ready to ship. Click to add this item to your cart.
Type Metric
Dimensions (inches) 1 x 1
Dimensional Tolerance (inches) ±0.02
Thickness (mm) 1.5
Parallelism (arcminutes) ±60
Line to Line Parallelism (arcseconds) ≤2
Surface Accuracy (λ) 1 per inch
Surface Quality 60-40
Frequency (lp/mm) 100
Coating Vacuum Deposited Chrome
RoHS Compliant
Ronchi Ruling 1" x 1" (120 lp/mm)
NT62-201 $215.00 In stock and ready to ship. Click to add this item to your cart.
Type Metric
Dimensions (inches) 1 x 1
Dimensional Tolerance (inches) ±0.02
Thickness (mm) 1.5
Parallelism (arcminutes) ±60
Line to Line Parallelism (arcseconds) ≤2
Surface Accuracy (λ) 1 per inch
Surface Quality 60-40
Frequency (lp/mm) 120
Coating Vacuum Deposited Chrome
RoHS Exempt
Ronchi Ruling 1" X 1" (145 lp/mm)
NT66-350 $215.00 In stock and ready to ship. Click to add this item to your cart.
Type Metric
Dimensions (inches) 1 x 1
Dimensional Tolerance (inches) ±0.02
Thickness (mm) 1.5
Parallelism (arcminutes) ±60
Line to Line Parallelism (arcseconds) ≤2
Surface Accuracy (λ) 1 per inch
Surface Quality 60-40
Frequency (lp/mm) 145
Coating Vacuum Deposited Chrome
RoHS Compliant

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