Resonance Box with C-E-G-C Tuning Forks and Hammer Capacity_2000mL Student pulley demonstration set with

Student pulley demonstration set with a range of pulleys for mechanical-advantage and force-multiplication comparisons

this plant cell model shows organelle ultrastructure and cell-wall layering for upper-level cell biology teaching

and flagellum

Stamped N and S ends on this 3 x 0

this electrically maintained tuning fork accepts 2-6V DC at universal binding posts

Resonance Box with C-E-G-C Tuning Forks and Hammer Capacity_2000mL Student pulley demonstration set withSolid wooden resonance box mounts four steel forks tuned to C 256Hz, E 320Hz, G 384Hz, and C' 512Hz a major chord array struck with the included hammer to amplify intervals and harmony.