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Numbers To Clearly Show the Parts
This high-quality wooden abacus is designed to allow students to perform basic operations and learn strategies for math
and a chrome-plated
1 x Concave Mirror 50mm Diameter & 100mm Focal Length
Set of 5 Concave Mirrors Spherical Stem model Numbers To Clearly Show theIncludes: 1 x Concave Mirror 50mm Diameter & 75mm Focal Length, 1 x Concave Mirror 50mm Diameter & 100mm Focal Length, 1 x Concave Mirror 50mm Diameter & 150mm Focal Length, 1 x Concave Mirror 50mm Diameter & 200mm Focal Length, 1 x Concave Mirror 50mm Diameter & 300mm Focal Length. Wooden Storage Box to Protect the Kit. Premium Quality: Optically worked, back silvered, with protective coating. Designed for use in professional laboratories but is an
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