Electrostatic Discharger, 10.5" Manufacturer_Austerlitz sized so the needle stays

sized so the needle stays readable from the back of the room

and thylakoid architecture for photosynthesis and organelle ultrastructure teaching

allowing a sodium or filament lamp to be aimed precisely onto a spectrometer slit or refraction-cell setup

Built for protist study

the half-size circulatory model traces arterial and venous pathways from heart to peripheral capillaries

Electrostatic Discharger, 10.5" Manufacturer_Austerlitz sized so the needle staysInsulated 10. 5 inch discharger with a curved metal arm, used to safely bleed accumulated charge from Leyden jars, conductors, and the dome of a Van de Graaff generator.