Spectrum Tube Apparatus Barometer all in a handy wooden

all in a handy wooden tray

Hands-on manipulatives: these counters are great for learning counting

Diameter 4cm

Magnetic Needles

Spectrum Tube Apparatus Barometer all in a handy woodenSpectrum Tubes demonstrate the wave properties of different gases. Set of 6x standard size high quality Spectrum Tubes. These spectrum tubes are for the Spectrum Tube Single Power Supply and the Spectrum Tube Carousel Power Supply. Power Requirements: 115 OR 220 VAC, 50 60 Hz. An electrode is sealed in each end and attached to a metal end cap with a loop for convenient hookup to wire connections. Each spectrum tube includes an activity guide.