US$ 123.68
Wide-field 100mm reading magnifier with a 15cm focal length
Current balance with a B
sized for measuring direction and field strength on the lab bench
this enlarged Hydra dissection model reveals internal anatomy
guided exercises that interact with the Emission Control simulator
Optically Worked Double Convex Glass Lens, 200mm Focal Length, 38mm Diameter Features_Spout Wide-field 100mm reading magnifier withOptically worked glass double convex lens with a 200mm focal length and 1. 5 inch diameter, polished and ground for image formation and refraction demonstrations in physics.
US$ 123.68
US$ 123.68
US$ 49.95
US$ 34.00
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US$ 60.00
US$ 123.68
US$ 30.00