The Carson LinenTest Magnifier is a compact, fold-out Linen testing magnifier featuring a 6.5x power 20mm lens. The LinenTest contains markings in both inches and centimeters for easy measuring of small parts. The LinenTest is perfect for stitch counting. This Magnifier is portable, lightweight and folds flat for storing when not in use. At Carson, we strive to make sure our customers are 100% satisfied with the quality of our magnifiers. We are so confident in our magnifiers that we back them with a Lifetime Limited Warranty! Carson will repair or replace your magnifier if it is found to have manufacturing defects in materials or workmanship. Please contact Carson for additional warranty details.