Class Codes & Rates:

Code 4150 is assigned to insureds engaged in the manufacture of optical goods and ground lenses. The classification contemplates specialists engaged in precision grinding of lenses or the grinding of blank or rough lenses to curvature and size for retailers, i.e., optometrists and opticians. It further contemplates the complete process of assembling the lenses into frames to obtain eyeglasses, opera glasses, field glasses and industrial goggles. Glass and plastic blanks, emery, polishing rouge, steel, silver and gold wire rod or tube, sheet plastic and metal are received from others. The glass or plastic blanks are heated; put in molds; formed; annealed; set in grinding machines; ground down to size, gauge and thickness; centered; polished; and edges are trimmed and beveled. The lenses are then buffed, washed and inspected. Some lenses are shipped to customers, while others are mounted in the product being produced. The products may be manufactured by insureds falling within the scope of Code 4150 or they may be assembled from component parts received from others.