Dot Array 25mm X 25mm, 0.0625mm Dots on 0.125mm Centers, White Glass These ultra high precision Chrome on White Glass Distortion Targets offer unparalleled accuracy for use in qualifying imaging systems. Several variations of this target are available; all are fixed frequency dot arrays in a choice of five different dot spacings and four substrate sizes. With a feature-to-feature accuracy of 2 micron, these patterns allow for extremely accurate testing and qualification of inspection systems. All targets are NIST traceable and serialized. A glass version and a film version on white mylar is also available.Specifications Dot diameter: .0625mm Dot spacing: .125mm Overall Accuracy: ±0.002mm Substrate type: Polished White glass Substrate size: 2” x 2” The pattern is formed in durable double layer Chromium (OD > 3.0) on a stable 0.125” White glass substrate. The pattern is positive (opaque features on a bright background) on the first surface (Right Reading Looking At). All targets are given complete inspection to ensure the highest quality calibration artifact. Please see the drawing below for complete specifications. Click here to download drawing
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