EISCO Round Double Convex High Optical Purity Glass Lens - 2" (50mm) Diameter - 50mm Focal Length - 15mm Thick Approx. 2" (50mm) 50mm 15mm EISCO Round Double Convex High Optical Purity Glass Lens - Diameter - Focal Length -...

Fresnel Lens Magnifier, Diameter 200mm (7.9''), Focal Length 200mm, Acrylic Lens (not Glass), for Physics Classroom, Solar Heating, Magnifiying, Fire Starter. (Focal Length 200mm) 200mm (7.9''), 200mm, 200mm) Fresnel Lens Magnifier, Diameter Focal Length Acrylic Lens (not Glass), for Physics...

Double Convex Lens, 200mm Focal Length, 3" (75mm) Diameter - Spherical, Optically Worked Glass Lens - Ground Edges, Polished - Great for Physics Classrooms - Eisco Labs 200mm 3" (75mm) Double Convex Lens, Focal Length, Diameter - Spherical, Optically Worked...

Magnifying Lens Optical - 20 pcs 42mm Double Convex Lenses 68mm Focal Lengths 1.65in Diameter, 0.3in Height Biconvex Optical Plastic Lens for Physics Jewelry Watch Repair Crafts 20 42mm 68mm 1.65in 0.3in Magnifying Lens Optical - pcs Double Convex Lenses...

Biconvex VR Lenses, 20 Pack 25mm x 45mm Focal Length Double Convex Lens, Flanged Winged Design for DIY Virtual Reality Viewers, STEM Physics Science Projects, Clear Acrylic 20 Pack 25mm 45mm Biconvex VR Lenses, x Focal Length Double Convex Lens,...

Halloscume 20 Pack Insect Bug Viewer Kit for Kids with Tweezers Explorer Outdoor Set Bug Catcher Containers for Insects Magnifying Insect Box Observation Kit for Science Nature Exploration Collecting 20 Pack Set Halloscume Insect Bug Viewer Kit for Kids with...

Nature Bound Bug Catcher Kit - 20 Piece Outdoor Exploration Set for Kids - Educational & Fun - Safe Insect Catch & Release with Bucket, Net, Magnifier & More - Great Gift for Young Explorers 20 Set Nature Bound Bug...

Insect Lore 2 Cups of Caterpillars Basic - 10 Live Baby Painted Lady Caterpillars - Refill for Habitat Kit - Caterpillars and Food Included 2 10 Insect Lore Cups of Caterpillars Basic - Live Baby Painted Lady Caterpillars - Refill...

24pcs Density Rectangular Blocks Science Kit for Classroom Physics Experiments Multi-Material Education Tool for Elementary School Student Science Measurement 24pcs Density Rectangular Blocks Science Kit for Classroom Physics Experiments Multi-Material Education Tool Wide density range: with four different material density...

Cabilock 24pcs Rectangular Density Blocks Set for Science Education Multi-Material Density Experiment Kit for Elementary Middle School Classroom Measurement and Teaching 24pcs Set Cabilock Rectangular Density Blocks for Science Education Multi-Material Density Experiment Kit Package List 6 x density block...

ERINGOGO 24pcs Science Education Density Blocks Set Multi-Material Rectangular Cubes for Physics Experiments, Student Classroom Teaching Tool, Science Lab Measurement Kit 24pcs Set ERINGOGO Science Education Density Blocks Multi-Material Rectangular Cubes for Physics Experiments, Student Package Include 6 x density...

EISCO Coarse Iron Filings, 250g - 20 Mesh Iron Shavings for Magnets 250g 20 EISCO Coarse Iron Filings, - Mesh Iron Shavings for Magnets These 20 mesh magnetic Iron Filings are great for classroom use and allow students to engage...