S-Shape Test Tube Stand, Model B Glass Sets & Apparatus_Distillation Apparatus One-ohm reference resistance coil non-inductively

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

5cm inner and 4

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

ten 4 by 3-inch plane glass mirrors at ~2

S-Shape Test Tube Stand, Model B Glass Sets & Apparatus_Distillation Apparatus One-ohm reference resistance coil non-inductivelyAluminum S shape test tube stand designed for chemistry and biology benches, providing tiered storage that keeps tubes upright and visible during student experiments.