Microscope Accessories Kit 200mm Fresnel Lens Focal Length 100mm 120mm 140mm 150mm 160mm 180mm 200mm 220mm Solar Concentrator Optical PMMA LED Lens Microscope Slides (Size : 200mm, Color : 180MM_2MM
par ZTBH
- Thread Distance: 0.3mm; Thickness 2mm; Magnification: 3x., Diameter: 200mm; Focal Length:100mm 120mm 140mm 150mm 160mm 180mm 200mm 220mm for choosing., Professional and practical design with beautiful appearance, easy to carry and use., Usually used in laboratories, schools, teachers, sample observation, eyepiece protection, etc.