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encouraging children to crawl
Size: A4 (approx
Features a 19mm slate covered with high quality wool cloth to guarantee the smoothest ball movement
None slip rubber feet
and are specifically designed to meet the high standards of professional users
Spare Slit for OPT090010 Raybox (Each) N568449 encouraging children to crawlSpare Slit for Ray Box Useful for studies of fundamental principles of optics using the ray tracing technique. Comprising a well painted, die cast metal box with an enclosure that houses the electric bulb for use as a light source in the experiments. Open front of the bulb enclosure with holes all around the bulb holder and extended side fins on the outside of the enclosure assist in the heat dissipation of the bulb. Integral side rails are provided
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