Double-Parallel Plastic Pulley, 50mm Diameter Pack Size_Single an ignition light firing on

an ignition light firing on compression for visual timing

Extreme 300x enlargement resolves fine structures including capillary beds and nerve endings in a detailed skin cross section for histology and dermatology teaching

one fitted with an exploder piston for impulse experiments

Two-amp low-voltage power pack delivering 6 to 12V AC for optical benches and demonstration apparatus

Double-Parallel Plastic Pulley, 50mm Diameter Pack Size_Single an ignition light firing onDouble parallel plastic pulley with two 50mm wheels in a steel frame and end hooks, a compound unit for demonstrating multi rope mechanical advantage in physics activities.