Kruss Handspectroscope/Wavelength September 14, 2011 · Posted In: Business Directory Share The Krüss Hand-held Spectroscope features a variable, precision slit for outstanding, crisp, clear spectra. It has a built-in wavelength scale for readings from 400 to 700nm. SKU: GMKR1504 Price: $585.00 QTY Add to cart Click image to view enlarged