Coleman 6/20 Junior II Optical Spectrophotometer Spectrometer

Coleman 6/20 Junior II Optical Spectrophotometer

Wavelength range: 320 - 825 nanometers (nm)

Volts: 110/220

Cycles: 50-60

Watts: 140

For parts or not working. Wavelength adjustor knob works but changes wavelength very slowly, likely a loose belt inside. See photos

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