US$ 17.95
Double-pole double-throw brass knife switch
Polished 8cm brass sphere on an ebonite-insulated metal base
condensing lens
sized for short-time-constant RC charging investigations and demonstrations of energy stored as half-CV-squared
Small Perch Fish Dissection Anatomical Model, Numbered Material_Porcelain Double-pole double-throw brass knife switchSmall perch dissection model with numbered structures demonstrates fish anatomy, organ systems, and aquatic vertebrate morphology for biology teaching.
US$ 17.95
US$ 38.98
US$ 100.00
US$ 150.00