Student Stethoscope with PVC Tubing and Stainless Steel Binaural Capacity_500mL this dual-cell model pairs plant

this dual-cell model pairs plant and animal cells side by side to highlight cell wall

Length-adjustable wooden pendulum simple-machine model with a blue bob sliding along the string and a wooden guide keeping the swing on a consistent path for period-vs-length measurements

Riveted 10-inch compound bar in brass and steel

Three-hundred-millimeter black 2mm-stackable lead with nickel-plated split-hollow pins on both ends

Student Stethoscope with PVC Tubing and Stainless Steel Binaural Capacity_500mL this dual-cell model pairs plantPVC tubing and a stainless steel binaural on this student stethoscope let beginners hear heart and lung sounds during basic physiology and anatomy lab work.