Special Features:

Focal length 0.855 m; grating 960 lines/mm; film cap. 100 ft.; spectrogram length 15.6 in.; excitation source 10 or 5 amp full wave, 5 or 2.5 amp half wave, electrically ignited arc; spectrograph, excitation stand, source 48 in. L, 32 in. W, 11.5 in. H; viewer comparator 21 in. L, 14 in. W, 14 in. H; bench mounted; 35 mm film cassette, daylight developing tank

Properties:

An optical instrument designed to break up the light from a source into its constituent wave lengths and to provide a means of qualitative or quantitative study of the spectrum line formed. The instrument essentially consists of four parts; the slit, the lenses, the dispersion system and photographic or photoelectric system. The instrument may incorporate a prism or grating system for the dispersion of light.