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						Optical system 
					 
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						Infinity chromatic aberration correction optical system 
					 
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						Observation tube 
					 
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						Hinged trinocular head, 45° tilt, pitch adjustment range: 54-75mm, unilateral diopter adjustment ±5 diopter split ratio: binocular 100%, binocular: trinocular = 80%: 20% 
					 
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						eyepiece 
					 
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						High eye point large field of view flat field eyepiece PL10X22mm 
					 
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						Objective lens 
					 
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						Infinity long working distance flat field achromatic metallographic objective: LMPL5X /0.15 / WD10.8 
					 
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						Infinity long working distance flat field achromatic metallographic objective: LMPL10X/0.3 / WD10 
					 
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						Infinity long working distance flat field achromatic metallographic objective: LMPL20X/0.45 / WD4 
					 
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						Infinity long working distance flat field semi-reduction metallographic objective: LMPLFL50X/0.55 / WD7.8 
					 
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						Infinity long working distance flat field semi-reduction metallographic objective lens: LMPLFL100X/0.8/WD2.15 (optional) 
					 
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						converter 
					 
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						Five-hole converter 
					 
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						Focusing mechanism 
					 
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						Coarse and fine-tuning coaxial, coarse adjustment per revolution: 38mm, fine-tuning per revolution: 0.2 mm, focusing accuracy: 0.002mm, with elastic adjustment device 
					 
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						Stage 
					 
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						Fixed platform: size 160X250mm 
					 
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						Workbench 
					 
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						Metal stage plate (center hole Φ12) / metal stage plate (center hole Φ25) / stage extension plate 
					 
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						Moving ruler 
					 
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						Low position coaxial mechanical moving ruler, stroke 120x78mm 
					 
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						Reflective lighting system 
					 
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						Reflective Kola illuminator with variable aperture diaphragm and central adjustable field diaphragm, adaptive 90V~240V wide voltage, 12V50W halogen lamp, center adjustable, continuously adjustable brightness 
					 
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						Polarizing device 
					 
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						Polarizer insert 
					 
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						Detector insert, 360 degree rotation 
					 
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						Filter 
					 
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						Φ32mm yellow/green/blue/neutral 
					 
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						Metallographic analysis software 
					 
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						Metallographic automatic analysis system  
					 
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						5 megapixel map camera 
					 
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						0.5X adapter 
					 
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						Micrometer (accuracy is 0.01mm) 
					 
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