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This black plastic linen tester has a 2-3/8" dia acrylic lens at approx 2X
3-1/4" x 3-1/2" base
2" x 1/16" scales along the left and right edges
5cm x 1mm scales along the top and bottom
Folds to 3/4" thick and will, of course, magnify anything you like, not just linen.
If the all metal jewelry photo sewing thread counter 2-3/8 linen tester foldable magnifier, 2x magnification caters to your requirement, welcome to buy or wholesale the high quality appliance with us. As one of the professional manufacturers of various optical products in China, we can assure you the high quality and good performance of our appliance.