Reticle 26mm Metric Square Grid, Scale and Hole Gauge This reticle contains patterns useful for measuring linear distances, X-Y positions, and hole diameters.Pattern: 13 diameters: 0.10mm through 1.0mm diameter in 0.1mm increments. 1.5mm, 2.0mm, 2.5mm. Grid: 10 x 10 mm in 0.5mm squares. Horizontal marked in 0.1mm increments, numbered every 1.0mm. The pattern line width is 0.025mm ±0.0025mm. The pattern has an overall accuracy of 0.001mm. The pattern has an overall accuracy of 0.00004” (0.001mm).The Reticle Pattern is very durable, double layer, deposited evaporative Chrome/Chrome Oxide, for a reflectivity of less than 5% looking at the pattern. The Patterns on all Reticles manufactured by Max Levy are replicated from Precision Chrome on Glass Tooling under clean room conditions. Click here to download the drawing. 26mm Compatibility Chart Full Compatibility Chart