Optical Glass Lens for Top Spinning Base, 3" Capacity_500mL Liquid propane Bunsen burner adds

Liquid propane Bunsen burner adds a flame stabilizer and adjustable air vent for consistent

this 2-pack of 20oz Griffin-shape borosilicate beakers adds a pouring spout for everyday home use

this Van de Graaff generator delivers spark-producing high-voltage demonstrations in the physics classroom

these plastic forceps provide precision grip for specimen manipulation without damaging delicate tissues or structures

this metal helix lets stairwell-scale wave-propagation experiments amplify the visibility of standing waves

Optical Glass Lens for Top Spinning Base, 3" Capacity_500mL Liquid propane Bunsen burner addsDouble concave glass lens at 3 inch diameter and 200mm diverging focal length, ground to polished beveled edges and usable as a top spinning base in secondary mechanics demonstrations.