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Listing all 40+ phonemes
Two of each colour
Add coloured liquid to the transparent model to demonstrate how the heart and lungs work together for oxygen exchange
orchestra or band rehearsal spaces
TICKER TAPE TIMERS, 6V Including Tape & Disk, Kit Swimming Listing all 40+ phonemesThese devices use an electromagnet which activates a striker, producing dots via a carbon disk on a ticker tape. The dots are produced at a rate of 50 60Hz depending on mains frequency. With 4mm terminal sockets.
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