"PARKWAY PLASTICS, INC."

These long-lasting aluminum tuning forks have a full sound.

This aluminum tuning fork has sliding weights on each tine.

Includes set of six tuning forks: 125, 250, 500, 1000, 2000, and 4000 Hz.

Even frequencies make harmonic relationships clear and calculations easier.

WARNING: CHOKING HAZARD–Small Parts. Not for children under 3 yrs.

Energy Transfer Demonstration

Plastic wave apparatus ideal for studying wave behavior.

Sturdy stroboscope ideal for studying periodic motion.

Provides electronically controlled waves.

Perform experiments in computed tomography.

The Advanced Projection Ripple Tank is a comprehensive system for demonstrating basic wave phenomena using water waves.