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Introducing the Percussion Plus double wooden agogo with beaterThis well built t-shape
This product also features adjustable arms moulded nose bridge and contoured brow guard
BSI tested and certified
A solid-top guitar with rosewood back and sides
to keep things running in whatever way is best for you
Raybox with Accessories (Each) A885359 Introducing the Percussion Plus doubleThe raybox can be used in a single ray mode without using the plano convex lens. However, with the lens inserted (plane face towards the light source), and using the two slit, three slit or broad slit masks, the emergent light can be made to be divergent, convergent or parallel by adjusting the position of the light source in relation to the lens. These facilities enable the raybox to be used in a wide range of optical experiments with transparent