22-Piece Organic Chemistry Glassware Set, 10/19 Joint, Borosilicate Glass Subcategory_Boiling Flasks Long-focal double-convex glass lens at

Long-focal double-convex glass lens at 75mm diameter and 500mm focal length

this hair-element hygrometer uses fiber expansion and contraction on an 85 mm dial

and sliding inner box let students measure how image size varies with pinhole-to-screen distance

Corrosion-resistant twelve-piece stainless steel slotted mass set totaling 1110 grams from 1 to 500 gram pieces

Life-size elbow joint model shows humeroulnar and humeroradial articulations with supporting ligaments and arm muscle insertions for upper-limb anatomy teaching

22-Piece Organic Chemistry Glassware Set, 10/19 Joint, Borosilicate Glass Subcategory_Boiling Flasks Long-focal double-convex glass lens at22 piece organic chemistry glassware set features 10 19 ground glass joints for comprehensive laboratory distillation and synthesis procedures.