This handheld spectroscope from Kruss allows for precise and consistent readings.
From Kruss, this handheld spectroscope features a precision, variable slit for crisp, clear spectra and a built-in wavelength scale for readings from 400 to 700nm. Works with optional Kruss Light Source,
GMKR20. Needs
GMKR1401 to work with GMKR20.