说明

• Product Description Laser Five Line Light Source Optical Experiment Box Parallel Light Source Physical Optics Convex Lens Concave Science Education Note: Product colours are shipped randomly Specification: Product name: five-line light source Power: 2* AA batteries (not included) Laser wavelength: 650NM Power: 0 Light source spacing: 10MM Size: 95x85x40MM Package included: 1 x Laser Five Line Light Source

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