Transparent Celestial Star Globe with Inner Earth Globe Item Type_Scoop Four-cylinder equal-mass set at 100g

Four-cylinder equal-mass set at 100g each in copper

Round convex glass mirror for physics optics experiments in reflection

supplying steady low-voltage current to electronics and optics circuits on student benches

Chrome-plated metal-framed 50mm reading magnifier with a 12cm focal length

supplying replacements when the originals lose loft or split during repeated charging cycles

Transparent Celestial Star Globe with Inner Earth Globe Item Type_Scoop Four-cylinder equal-mass set at 100gBuilt around a transparent celestial sphere with an inner Earth globe, this star globe illustrates rotation, revolution, and the positions of major stars and constellations.