The Linen "tester" is a convenient folding type magnifying glass not just for inspecting linen and cloth, but for inspecting any kind of flat sample prior to examination in either a light or scanning electron microscope. Microscopists find these "linen testers" to be the ideal kind of tool to use for identifying important areas that have to be cut out of a relatively flat kind of sample for further analysis and inspection.
Foldable, about 1" x 1"
