7.5cm Ring with Boss Head Clamp Subcategory_Rulers and Measuring Hundred-fourteen-piece organic chemistry molecular model

Hundred-fourteen-piece organic chemistry molecular model set with 50 atoms and 64 links covering single

Large-wheel pulley mounted on a universal clamp for attachment to retort rods or support stands

Sliding-window gold-leaf electroscope with anodized aluminum walls and an internal scale

5x clear views through a 3-inch optical-glass lens with a 6-inch focal length

7.5cm Ring with Boss Head Clamp Subcategory_Rulers and Measuring Hundred-fourteen-piece organic chemistry molecular modelIntegrated boss head joins a 7. 5 cm closed ring on this plated mild steel retort accessory, accepting vertical support rods up to 5 8 inch on standard laboratory stands.