Triple-Parallel Plastic Pulley, 50mm Diameter Subject_Zoology suitable for securing tubes and

suitable for securing tubes and flask necks in general laboratory assemblies

this motor-generator pairs a split-ring commutator against slip rings with bulb indicators

Four-times enlarged premium ear model with five separable sections exposes detailed outer

and control strips for a fuller genetic-taste-perception activity

supporting dental hygiene and pathology teaching

Triple-Parallel Plastic Pulley, 50mm Diameter Subject_Zoology suitable for securing tubes andTriple parallel plastic pulley with three 50mm wheels on a steel frame with end hooks, supporting three rope compound arrangements for advanced mechanical advantage investigations.