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: Balloon®
- Model: FDL11G
- Magnification: 2.5x
- Len diameter:110mm
- Colour: Black
- Material: Plastic frame & glass len
- Build in E10 4.8V light bulb
- Made in China
- Glass lens mounted in a plastic frame assures a uniform flat field that is always in sharp focus