1000g Euro Design Stainless Steel Balance Weight Set with Wooden Block Glass Columns & Condensers_Air Condensers a 50mm double-convex glass lens

a 50mm double-convex glass lens spanning 300-1000mm focal lengths gives projection-style optics setups a single range-rated element

offering a spread of spring constants for simultaneous comparison in oscillation and Hooke's-Law experiments

5°C in a protective case for paired wet and dry bulb humidity readings

25 inches tall and 4

Half-size digestive system model fits smaller class benches while preserving the full esophagus-to-rectum path and accessory organ anatomy in two removable parts

1000g Euro Design Stainless Steel Balance Weight Set with Wooden Block Glass Columns & Condensers_Air Condensers a 50mm double-convex glass lensEleven piece European style set scaling 500g down to 1g totals 1000g, stored in a wooden block that keeps stainless steel masses organized, corrosion free, and ready for analytical work.