Fine Iron Filings in Sprinkle Bottle, 100g, 40-60 Mesh Lab Supplies_Thermometers endodermis

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adjustable from 0 to 45 degrees with an alignable pulley and included pan and roller

with adjustable slit and draw-out focusing for examining the spectral composition of light sources

an ignition light firing on compression for visual timing

Shows oxygenated and deoxygenated blood paths between heart chambers and alveolar surfaces through seven hand-painted removable parts designed with medical-professional input

Fine Iron Filings in Sprinkle Bottle, 100g, 40-60 Mesh Lab Supplies_Thermometers endodermisFine 40 60 mesh iron filings in a 100 gram sprinkle bottle, sized to dust evenly over paper or around a magnet to make field lines visible during introductory magnetism work.