Edmund Optics Inc. 27mm Diameter Contact Reticle, English Crossed NT39-449

These glass reticles offer greater stability than film reticles which can bend, warp, and easily be damaged. Patterns are low reflection chrome deposition for high contrast and easy readability. Markings are on the outside of the reticle, so the scales are always in direct contact with the object under view. This provides optimum focus and accurate measurements.Our 21mm and 27mm diameter reticles for use with our 6X and 9X comparators and our 26mm and 35mm diameter reticles for use with our Peak Measuring Loupes and our Peak Illuminated Magnifiers. Please note the field of view specified for the magnifiers before selecting a magnifier/reticle combination. For example, the 5/8" (16mm) field of view for a 12X comparator may not be suitable for use with a reticle that has a 3/4" (20mm) scale if the full scale is needed. Straight Line Scale Reticles English Scale: numbered every 0.025" 26, 27 and 35mm Diameters: 0-0.75" in 0.005" increments 21mm Diameter: 0-0.5" in 0.005" incrementsMetric Scale: numbered every 1.0mm 26, 27 and 35mm Diameters: 0-20mm in 0.1mm increments 21mm Diameter: 0-15mm in 0.1mm increments Inch/Metric Comparison Reticles Straight line scale with metric top, english bottom for comparative measurements. English Scale: 0 to 0.6" in 0.01" increments Metric Scale: 0 to 15mm in 0.1mm increments Crosshair Scale Reticles English Scale: 0 to 0.8" in 0.01" increments -0.40" to +0.40" scale Metric Scale: 20mm in 0.1mm increments -10mm to +10mm scale Crossed Scales Reticles Scales on both horizontal and vertical crosshair lines. English Scale: 0 to 0.8" in 0.01" increments -0.40" to +0.40" scale Metric Scale: 20mm in 0.1mm increments -10mm to +10mm scale Halftone/Line Screen Scale Reticles 8 LPI (Lines per Inch) scales: 65, 85, 133, 150, 175, 50-100-200, 55-110, 60-120