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Premium Quality: Optical Bench Economical is made of high-grade construction all the way through
covering topics such as kinetic energy
Each fraction gradation has its own distinct color
allowing the abacus to lie flat on student desks
one double and one triple sheave
Pack of 2 Heavy Duty Safety Glass Clear Lens Geology Posters Premium Quality: Optical Bench EconomicalIncludes: 2 x Heavy Duty Safety Glass Clear Lens Polycarbonate Lenses. Color Clear Lens. Standard Ansi Z87. 1 2003 EN166. Polycarbonate lenses provide 99. 9% UV protection. Impact resistant, lightweight and comfortable. Anti scratch coating Shiny black frame with adjustable temples. Premium Quality: Glasses are made of high quality, heavy duty and durable materials. Designed for use in professional laboratories but is an ideal choice for science
