Order and harmony is exhibited in tasteful simplicity in his attentive diligence in the application of a coating his own hand-made translucent and creamy acrylic over the charcoal-black ink.

他把自己亲手制作的半透明乳白色的胶质涂层，覆盖在炭黑的墨水上，简洁细腻中带著秩序与和谐。

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Mr Cassagnes saw the potential for the toy when he noticed, while working with metal powders, that marks in a coating of aluminium powder could be seen from the other side of a translucent plate.

BBC: Etch A Sketch inventor Andre Cassagnes dies at 86