This linen testing magnifier is used during fabric manufacturing and purchasing to ascertain thread count.
Users in the printing industry also use this magnifier to ensure printing does match set requirements.
It folds up neatly to slip into your pocket and protect the lens when not in use. See the lens clarity in the product gallery.
Lens diameter: 20mm
Lens diopter: 22D (6.5x)
Ruler size: 15mm in 1mm increments as well as 3/4 inch in 1/16th inch increments.
Folded up size: 45mm x 30mm x 15mm
