WAC 296-17A-6604. Classification 6604

6604-00 Lens: Manufacturing, grinding and polishing Applies to: • Manufacture of precision lenses for their own sales, or for other retailers such as optometrists and opticians. • Manufacture of contact lenses and artificial eyes which are usually molded from acrylics, or cut and polished. Work activities include, but are not limited to: • Receiving glass and plastic blanks (or roughs), emery, and polishing rouge from others; • Heating blanks; • Placing into molds; • Forming, annealing (tempering), and grinding to curvature, size, gauge and thickness; • Trimming and beveling lenses on precision lathes; • Buffing, washing, and inspecting lenses. This classification includes clerical and sales personnel. Equipment used include, but are not limited to: • Diamond cutting tools; • Grinding machines; • Lathes; • Molds. Exclusions: • Optical dispensary stores that do no lens grinding are classified in 6308. • Manufacture of glass is classified in 3503. 6604-01 Optical goods: Manufacturing, N.O.C. Applies to: Manufacture of optical goods not covered by another classification (N.O.C.). Products manufactured include, but are not limited to: • Eye glasses; • Field glasses; • Goggles; • Opera glasses; • Telescope. Work activities include, but are not limited to: • Receiving glass and plastic blanks (or roughs), emery, polishing rouge, steel, silver and gold wire rod or tube, sheet plastic and metal from others; • Heating blanks; • Placing into molds; • Forming, annealing (tempering), and grinding to curvature, size, gauge and thickness; • Trimming and beveling lenses on precision lathes; • Buffing, washing, and inspecting lenses; • Mounting the lenses into frames; • Shaping of the frames from raw materials; • Assembling products from component parts received from others. This classification includes clerical office and sales personnel. Exclusions: • Optical dispensary stores that do no lens grinding are classified in 6308. • Businesses engaged in the precision grinding of lenses or the grinding of blank lenses to curvature and size are classified in 6604-00. • Manufacture of contact lenses or artificial eyes, are classified in 6604-00. • Manufacture of glass is classified in 3503.