Metal Lab Accessory Stand LabLearner Research-grade oxygen spectrum tube at

Research-grade oxygen spectrum tube at 26cm with a 10cm central capillary

spherically ground

5 inch premium dynamics carts with nylon ball-bearing wheels and end hoops for elastic and inelastic collisions

configured to make and break a circuit at the rhythm of a Morse-code transmission for telegraph-history demonstrations

Eye model seated in a bony orbit socket illustrates the protective skull relationship of the eye alongside its internal anatomy in a combined teaching unit

Metal Lab Accessory Stand LabLearner Research-grade oxygen spectrum tube atHeavy base metal stand with a pillar, lock screw, and engraved index line for reference alignment, supporting optical components, slits, and apparatus in laboratory and demonstration setups.