Demonstration Spherometer Subcategory_Weights and Masses supplying replacements when the originals

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

the moderate curvature spreading light gently for divergence and virtual-image-formation work in refraction demos

Red LED on a demonstration base with 4mm plug connections

gripping objects up to 90 mm and mounting to support rods up to 15 mm for chemistry and physics setups

the 90-45-45-degree faces redirecting wider beams for total internal reflection and image-inversion work

Demonstration Spherometer Subcategory_Weights and Masses supplying replacements when the originalsDemonstration spherometer with an oversized 133 mm dial head and baked enamel finish, letting an entire classroom read spherometer values before students work with benchtop units.