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Relation: subclass

direct-childrendocumentationgraph
Device984A Device is an Artifact whose purpose is to serve as an instrument in a specific subclass of ...^
    OpticalDevice3A Device which enables someone to see something more clearly or with greater magnification.^
        EyeGlass.A lens or pair of lenses with or without frames whose purpose is to to correct a defect in vision. ...^
        Lens.An OpticalDevice which consists of a polished, transparent piece of glass or plastic. Lenses are ...^
        Microscope.An OpticalDevice with a stand and a focus, which is used for magnifying the images of things that...^

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