Ceramic Magnets with Keeper and Stamped Ends, 3" (Discontinued) Physics this 250mL polypropylene pitcher features

this 250mL polypropylene pitcher features molded graduations and autoclavable chemical-resistant construction

Engineered with a higher spring constant than a classic coiled novelty spring

and 38mm lens holder - an inexpensive starter platform for image-formation experiments

Regulated dual-output power supply showing independent LED readouts of voltage and current

Ceramic Magnets with Keeper and Stamped Ends, 3" (Discontinued) Physics this 250mL polypropylene pitcher featuresStamped N and S ends on this 3 x 0. 5 x 0. 25 inch ceramic bar pair simplify pole identification, with a spacer and keepers in a 3. 5 x 1. 5 x 0. 625 inch cardboard storage box.