A professional who performs one or more of following tasks to inspect glass and plastic lens blanks for defects. Responsibilities include:

• Removes paint and wax from blank with solvent and razor blade.
• Rinses blank in water.
• Examines surface and edges to detect defects, such as pits, scratches, and chips.
• Inspects blanks with polariscope to detect annealing defects, such as bubbles, striae, fire cracks, or seal checks.
• Marks defective blanks for rework or salvage, using crayon or pencil.
• Sorts blanks by grade and type of defect.
• Weighs lens blanks and records weight for determining shipping costs.
• May pack blanks in cartons for shipping.
• May gauge blanks.
• May assemble nonprecision optical element into mechanical housing.