These folding type linen "testers" are convenient folding type magnifying glasses, 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.
The magnifiers, featuring high quality optics and glass lens are completely collapsible and are constructed out of aluminum with a black anodized finish, and are available in three popular magnifications.
We also offer a selection of a lower cost (but still high quality) linen testers under the SPI Supplies Brand® which might appeal more to the economy minded. Also, in the SPI Supplies Brand we have the Giant Linen Testers.