Model 285D Spectrometer
The Model 285D is a 0.5 m + .5 m double spectrometer which includes aspheric collimating and focusing mirror assemblies, "Snap-In" grating mount to accept plane gratings in dual holder assembly. Manual scanning mechanism. Wavelength indicator reading directly in Å and is accurate to ±0.5 Å over the entire wavelength range with a 1200 G/mm grating. Bilaterally adjustable entrance and exit slit assemblies adjustable from 5 to 2000 mm. Height adjustable to 20 mm. Intermediate slit is bilaterally adjustable from 5 to 2000 mm.