US$ 39.00
Needle valve and flame stabilizer deliver fine flame control on this liquid propane Bunsen burner for precision chemistry and biology heating work
reducing the need for separate tool types
Built for kitchen science whimsy
Six-lens optics set of three double-convex and three double-concave glass lenses with ground beveled edges
Premium Seismograph Teaching Model Science Classroom Needle valve and flame stabilizerManually operated seismograph model that traces shock waves onto a pulled paper strip, visualizing the relationship between local motion and seismic recording for geology lessons.
US$ 39.00
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