Hand Made Wooden Test Tube Spice Rack with 12 Borosilicate Glass Test Tubes, 6 inch Clearance this motor-generator pairs a split-ring

this motor-generator pairs a split-ring commutator against slip rings with bulb indicators

Twelve-ball drilled set in a foam-lined plastic case with two each of aluminum

producing oxygen's characteristic emission lines for spectroscope viewing of atomic-emission and quantum-energy levels

Polyhedral 120mL glass alcohol lamp ships with a metal cap and fiber wick for low-temperature bench heating in chemistry and biology demonstrations

Hand Made Wooden Test Tube Spice Rack with 12 Borosilicate Glass Test Tubes, 6 inch Clearance this motor-generator pairs a split-ringHandmade wooden spice rack holds twelve 6 inch borosilicate glass test tubes with caps and includes a filling funnel for kitchen to lab cross over gifting.