Friedrich Adolph Nobert

Friedrich Adolph Nobert (17 January 1806 – 21 February 1881) was a Pomeranian microscope designer who pioneered the use of diamond-ruled microscope slide gratings for accurate measurements. This extended further to diffraction gratings for use in spectrometers and the measurement of the solar spectrum by Anders Jonas Ångström which was published in 1868 made use of gratings made by Nobert. The finest lines were found to be at a distance of 0.1128 µm.