Description

Long-focal double-convex glass lens at 75mm diameter and 250mm focal length

Round convex glass mirror for physics optics experiments in reflection

Wider-aperture concave glass mirror at 75mm with 200mm focal length

letting students compare four densities by mass alone while the volume is held constant across the set

Includes kidneys

Round Bug Viewer with 4X Magnifier Lid Waves & Oscillation_Sound & Resonance Long-focal double-convex glass lens atClear magnifier lid on this round viewer captures and enlarges small insects or specimens for elementary and middle school entomology observation.

Exchange/Return Notes

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Final sale items are not eligible for returns or exchanges.
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Round Bug Viewer with 4X Magnifier Lid Waves & Oscillation_Sound & Resonance Long-focal double-convex glass lens at

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