Bell in Vacuum Jar, Acrylic, 4-6V DC Entomology & Zoology_Entomology Supplies Aluminum 40cm precision force table

Aluminum 40cm precision force table with tapped pulley positions and central ring assembly for resolving and composing force vectors under equilibrium conditions

Pack of 12 metal lattice support clamps fitting rods up to 12

sized for individual student-lab use in simple-machines units

Hard vulcanized ebonite rod that takes on a strong negative charge when rubbed with fur

Bell in Vacuum Jar, Acrylic, 4-6V DC Entomology & Zoology_Entomology Supplies Aluminum 40cm precision force tableAcrylic bell in vacuum jar with an internal 4 6V DC electric bell that fades and falls silent as the enclosed air is removed, visualizing sound transmission dependence on a medium.