Spectrum Tube Apparatus Barometer all in a handy wooden

all in a handy wooden tray

250 pieces: these transparent counters that are great for classroom use

150-piece set includes colorful gears

A clearer conception of the routes of the systemic and pulmonary circulation can be obtained

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.