Accurate grid for X, Y position calibration, distortion checking of microscope stages, video/optical systems. Overall Accuracy ±.003mm, Line-to-Line ±.001mm. On stable glass substrate etched in reflective chrome. Pattern is on the top surface (right-reading looking through.)
Pattern: Linewidth: 0.050mm. Line spacing, center to center: 1mm. Active pattern area: 30.05mm x 30.05mm. Overall dimensions: 2.00”x2.00”x0.060”.