Laminated & Weatherproof, this card is perfect to keep in your wallet and allows inspectors to quickly determine if wire rope is serviceable. On the imperial side, it tells inspectors the minimum size allowed in fractions and 1,000th s for rope sizes 3/8″ to 1 3/4″. The metric side gives the minimum size allowed in 1,000th s for rope sizes 10 mm to 45 mm.