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Pack includes:
Can be used to make measurements of the level of free-oxygen in air or dissolved oxygen in water
Extension Pole 4' to 8'
Widths 45cm
Seat Height 460 x 455 depth
Percussion Plus wooden slide swanee whistle 224944 Pack includes:This item from Percussion Plus is a good quality, solid wood 'Swanee' whistle which has a range of one octave starting approximately from the F above middle C. It is lots of fun to play and a great way to introduce children to exploring different pitches. Play the instrument by blowing the whistle while adjusting the length of the slide. Extend the slide with your hand to produce a lower pitch, and push it back in to raise the pitch. When fully