Up for auction is a DANKER & WOHLK PARABOLAR FITTING MANUAL 16 pages. Features information about - PARABOLAR LENS - CHARTS FOR PLUS/MINUS LENSES - CHART FOR OPTICAL ZONE - THICKNESS CHARTS - CHOOSING/ORDERING LENSES - DIOPTRIC POWER - EVALUATION OF FIT - TIGHT/LOOSE LENS - FLUORESCEIN PATTERNS - KERATOCONUS - RESIDUAL ASTIGMATISM - TORIC LENSES - BIFOCALS - COSMETIC LENSES. Softcover with handling wear no loose pages. Shipped with cardboard support media mail. $4.75 s/h. Payment expected within 7 days. Shipments are made 3 or 4 business days after payment received. I message a shipping notice the same day item is mailed. Ship only within the U.S.