Trinocular viewing head inclined 45° Widefield 10x/22 mm focusing eyepieces with eye cushions Infinity LWD M plan achromat 5x, 10x, 20x, semi-Apo 50x metallurgical objectives Encoded quintuple nosepiece with DIC slot Interpupillary distance adjustment: 50 mm to 75 mm Three-layer mechanical stage (240 x 250 mm), 50 mm (X) x 50 mm (Y) movement range X-Y Vernier scale: low-position right-handed stage controls Teardrop stage plate inserts and crescent-shaped stage plate insert Reflected, inverted metallurgical frame, coaxial fine and coarse focusing system Coarse range: 9 mm (6.5 mm up and 2.5 mm down), fine precision: 0.002 mm BF/DF slider, polarizer, and 360° analyzer Adjustable and centerable field iris diaphragm and aperture diaphragm Halogen illuminator, variable intensity control, light indicator, ECO sensor