US$ 38.25
producing distinct audible pitches at varying spin speeds to relate rotational frequency to perceived sound frequency
75-inch aluminum-and-steel frame for mass-comparison work
Sixty-five-piece molecular model set with 32 atoms and 33 bonds for demonstrating bonding angles
and convection experiments
13-Piece Steel Tuning Fork Set in Wooden Case Subcategory_Globes producing distinct audible pitches atThirteen nickel plated steel forks spanning C 236Hz to C 512Hz at + 5% accuracy, each plain shanked for clamping or holding, supplied in a wooden case for full classroom harmonic investigations.
US$ 38.25
US$ 73.00
US$ 152.82
US$ 98.91
US$ 60.00
US$ 193.50
US$ 30.00
US$ 800.00
US$ 999.50
US$ 60.00
US$ 103.32