Reticle 26mm Concentric Circles .05 In Increments/Crosshair This Reticle is used for Diameter, Radius, Hole Centering and Concentricity measurements. It has a line width of .001” ±.0001” and all features are true position within .00004”/.001mm. It can also be used as a Boresight and Alignment Reticle.The Pattern consists of a Crosshair and 15 Concentric Circles from .050” diameter to .75” diameter in .05” diameter increments and is right reading looking through the glass so that the pattern can be in direct contact with the object to be measured.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