3D Paramecium Sectional Anatomical Model on Base with Removable Parts, 18 x 8 inch Class_Class B 9A with oxidized constantan winding

9A with oxidized constantan winding on a vitreous-enameled steel tube and a phosphor-bronze sliding contact

Long-format 150 x 10mm chrome-steel cylinder pair with half-red

supporting reproductive cell biology teaching

this Alnico U-shape carries 45mm pole spacing for compact-bench field demonstrations and motor-effect setups

the bulky triangular geometry handling wider beams for total internal reflection

3D Paramecium Sectional Anatomical Model on Base with Removable Parts, 18 x 8 inch Class_Class B 9A with oxidized constantan windingThree dimensional Paramecium sectional model with removable parts reveals cilia, oral groove, nuclei, and internal organelles for protist biology teaching.