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speed up once the disc is spinning and flashing)
2 up and 2 down
central focussing knob
An excellent present for bright junior or handy teenager
Chemistry sets are hard to come by under modern restrictions
Dynamo Torch Kit Magnifiers and Microscopes speed up once the discMake your own kinetic power that is , convert your own hand motion into electrical energy to power a torch or motor. All materials needed are in the kit no batteries required! Part of the Green Science series, 21cmx17 x 6 package. Will suit budding engineers 8+ ready to create some useful tool.
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