Vinyl Periodic Table Poster, Made of a durable, light weight, waterproof, Colored printing helps your students distinguish between metals, non-metals, and noble gas families, Has 5 grommets to easily hang on the wall or from the ceiling, Dimension: 8x4feet
Periodic table of spectra makes it clear to students that each element has its own spectral fingerprint, Poster Heading: Emission Spectra of Elements, Size: 24 x 36in
Stroboscope, A Hardboard Disc With Twelve 50 X 3 mm Slots And Finger Hold, Pivoted On A Ball Bearing Mount Which Also Acts As A Convenient Handle. Diameter Of Disc 255 mm