365-Piece Organic Stereochemistry Molecular Model Set prop65 with a captive thumbscrew on

with a captive thumbscrew on one prong for Melde's standing-wave experiment and binding posts accepting 2-6V DC

supplying the strongest field of the Alnico horseshoe series for visible attraction-distance demos

Paramecium

A fully adjustable vibrator system is incorporated and spark suppression capacitors are housed in the base

75:1 step-up ratio

365-Piece Organic Stereochemistry Molecular Model Set prop65 with a captive thumbscrew onThree hundred sixty five piece organic stereochemistry model set with 32 carbons, 60 hydrogens, oxygens, nitrogens, sulfurs, plus 2D orbital and short bond components for chirality work.