STEINER High-Contrast-Optics. High-Performance-Optics: STEINER High-Contrast Optik. STEINER Nitrogen- Pressure-System: yes. Simply folded down for use with eyeglasses. with durable polycarbonate Makrolon housing, temperature range between -15°C to +55°C. Non-slip NBR-Longlife rubber armour protection resists oil, acid or adverse weather.
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