Square 40mm K9 Plano-Convex Cylindrical Lens Focusing Beam Focal Length 250mm for Optical Experiment

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Geometric Optics Experiment Set: Optical Lens Kit With Convex And Concave Lenses For Light Refraction And Reflection - Ideal For Physics Teaching And

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Coast HX5 Pure Beam Focusing Pocket Light, 130 Lumens, 259' Beam, 1x AA

Coast FL75 Dual Color Pure Beam Focusing Headlamp, 435 Lumens, 469' Beam, Green/Gray, AAA Battery

Coast PX32 Pure Beam Focusing Flashlight, 120 Lumens, 255' Beam, AA Battery

Coast FL75 Dual Color Pure Beam Focusing Headlamp, 435 Lumens, 469' Beam, Red/Gray, AAA Battery

Coast FL70 Pure Beam Focusing Headlamp, 435 Lumens, 469' Beam, 3x AAA

Coast G50 Pure Beam Focusing Flashlight, 355 Lumens, 620' Beam, AAA Battery

Coast HP7 Pure Beam Focusing Flashlight, 410 Lumens, 751' Beam, AAA Battery

Coast FL75 Dual Color Pure Beam Focusing Headlamp, 435 Lumens, 469' Beam, Blue/Gray, AAA Battery

Coast HP3R Rechargeable Focusing Penlight, 245 Lumens, 305' Beam, Black

Coast PolySteel 600 Pure Beam Focusing Flashlight, 710 Lumens, 810' Beam, 4x AA

Coast FL85 Dual Color Pure Beam Focusing Headlamp, 615 Lumens, 600' Beam, 3x AAA

Coast FL80 Pure Beam Focusing LED Headlamp, 615 Lumens, 3x AAA

Coast PX1 Pure Beam Focusing Flashlight, 315 Lumens, 429' Beam, 3x AAA

Coast G32 Pure Beam Focusing Flashlight, 355 Lumens, 433' Beam, AA Battery

Coast PolySteel 400 Pure Beam Focusing Flashlight, 440 Lumens, 688' Beam, 4x AAA

Coast HL27 Pure Beam Focusing Headlamp, 360 Lumens, 433' Beam, AA Battery

Coast FL75 Dual Color Pure Beam Focusing Headlamp, 435 Lumens, 469' Beam, Black/Red, 3x AAA

Coast PolySteel 200 Pure Beam Focusing Flashlight, 320 Lumens, 387' Beam, 3x AAA

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Coast HL7R Rechargeable Pure Beam Focusing Headlamp, 240 Lumens, 341' Beam

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