Optical Comparator Resolution 0.0001 in/0.001mm Accuracy +/-0.1 Percent Or Less (Contour) +/-0.15 Percent Or Less (Surface) Contour Illumination 24V 150W Halogen Bulb Effective Table Working Area 17 45/64 in x 5 45/64 in Image Type Erect Image Magnification - Included Lens 10X Measuring Unit Linear Scale Optical System Orientation Horizontal Projector Series Mitutoyo PH-3515F Screen Size 14 in Surface Illumination 24V 150W Halogen Bulb Table Size 17 45/64 in x 5 45/64 in