S-Shape Test Tube Stand, Model B Glass Sets & Apparatus_Distillation Apparatus Quarter-scale full-body muscular model at

Quarter-scale full-body muscular model at 18 inches tall shows superficial muscle groups in anatomical position

Larger brass conductor cone on an insulated rod and base

this 40-piece optical bench kit pairs an aluminum track and sliding holders with lamp

Permanent-magnet stack inside an 8 x 5 inch base recharges weakened bar and horseshoe magnets by realigning their domains - no electrical power

One-ohm reference resistance coil non-inductively wound from double silk-covered constantan on a plastic rod inside a transparent housing with two terminals at plus-or-minus 1% accuracy

S-Shape Test Tube Stand, Model B Glass Sets & Apparatus_Distillation Apparatus Quarter-scale full-body muscular model atAluminum S shape test tube stand designed for chemistry and biology benches, providing tiered storage that keeps tubes upright and visible during student experiments.