Optically Worked Double Convex Glass Lens, 75mm Diameter, 500mm Focal Length Microscopy_Microscopy Equipment &Supplies Long-focal double-convex glass lens at

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

75-inch frame for bench storage between uses in teaching chemistry and biology labs

Life-size stomach model opens to reveal mucosal folds

and follicular stages from primordial through mature corpus luteum for reproductive anatomy and histology teaching

hand-painted detail for blood-flow teaching

Optically Worked Double Convex Glass Lens, 75mm Diameter, 500mm Focal Length Microscopy_Microscopy Equipment &Supplies Long-focal double-convex glass lens atLong focal double convex glass lens at 75mm diameter and 500mm focal length, the f 6. 7 geometry pushing the focal point downrange for projection style real image formation across long benches.