Standard 20X/0.25, DIN 160/0.17 plan achromatic objective lens. Standard 40/0.65, DIN 160/0.17, spring, plan achromatic objective lens.
Standard 60/0.85, DIN 160/0.17, spring, plan achromatic objective lens. Standard 100X/1.25, DIN 160/0.17, oil, spring, plan achromatic objective lens. 20mm Mounting Thread (in diameter). Objective lens with screw-on case.
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