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with one or more mechanical switches which allow discrete resistances offered by the box to be dialed in
Cross-section of the penis
Great for students to use during math and science lessons
Activity guide included
tenths and twelfths in 9 distinct colors with printing on each piece
Zinc Rod Hydra model with one or more mechanicalZinc Rod. With brass terminal. Premium Quality: Zinc Rod Set is made of high grade construction all the way through, excellent build quality and proven reliability across the range. Designed for use in professional laboratories but is an ideal choice for science classrooms and household use. If you need custom order with different sizes design, please contact us.
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