Reticle 10 Concentric Circles 0.25mm - 2.5mm

KR-503 Concentric circles reticle (10 circles) with diameters equal 0.25mm through 2.5mm with crossline. No numbers. Learn how to make accurate measurements when using your reticle here and learn about calibrating your microscope here. Reticle is available in a number of different diameters, select below when ordering.

• Diameters: 0.25mm, 0.5mm, 0.75mm, 1mm, 1.25mm, 1.5mm, 1.75mm, 2mm, 2.25mm, 2.5mm
• Lines: Chrome deposition
• Chamfer: 0.010" - 0.020"
• Flatness: 2 waves or better
• Centering: Within 0.005"
• Tolerances: Unless otherwise stated +/-0.0002" (+/-5 microns)
• Glass Thickness: 1.5mm+/-0.1mm
• Surface Quality: 20/10
• Parallelism: 2 min.

NOTE: This is a special order product. Please allow 2-3 weeks for delivery. This item is not returnable.