SPI Supplies will be closed on Monday, May 30 for Memorial Day. All orders placed during the long weekend will be processed on Tuesday, May 31
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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. Plastic frames are not for everyone since they lack the higher precision of the (somewhat more expensive) metal frame equivalents. Available either in the PEAKÂ® or SPI SuppliesÂ® brands.