Pair Of Tuning Fork - Steel, Includes: (2) Tuning Forks With Bases, One Is Adjustable (1) Mallet, For Demonstrating The Production Of Beat Frequencies. Comprises Two Nickel Plated Forks A (440 Hz) Mounted On Individual Boxes
Parallelogram Of Forces Apparatus, Apparatus Demonstrates The Relationship Between Forces Acting At A Point, Comprised Of: A Board 25.5in X 19.7in, Two Aluminum 50mm Diameter Pulleys On Clamps, Three Iron Nickel Plated Hangers, Twelve Slotted Weights
Pascalft s Law Apparatus, Weight: 3.3lb, Length: 13.0in, Width: 8.7in, Height: 9.4in, Consists of a moulded plastic base into top of which may be screwed one of a set of four vases of differing shape & a movable index on vertical rod enables the height of water