Linen Testers, originally used for counting threads in textiles, are now the most popular general purpose magnifiers used by graphic arts professionals, also popular in print shops worldwide.

- Brand: I.L.K.
- Model: 7521
- Magnification: 9x
- Size: 10mm (1/2")
- Colour: Sliver
- Finest quality (Made in Japan)
-  I.L.K. Linen Testers are convenient folding type for easy carring
- Glass lens mounted in a cast zinc frame assures a uniform flat field that is always in sharp focus