Count on Carson to bring you and your customers truly innovative, high-quality consumer optics at extraordinary value. We are a leading supplier in consumer optics. Major catalog companies and retailers coast-to-coast rely on Carson for a broad range of products in every category including recreation, sports, hobby, school, and craft. From high-end binoculars to low cost magnifiers and everything in between, supported with eye-popping packaging and point-of-purchase displays, our dedicated sales team makes sure the product you need gets on the floor and moves out the door. Innovation, high-quality and extraordinary value. today's smart consumers demand it. Carson delivers it. Please call or email if you have any questions concerning our products. Description carson linentest magnifiers are compact fold out loupe magnifiers that are perfect for stitch counting. these carson magnifiers contain markings in both inches and centimeters for easy measuring of small parts. the linen test magnifier by carson is portable lightweight and folds flat for storing when not in use.