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Observation Tube: Moveable, with lock-screw
Slit Tube: Fixed with variable slit objective
Scale Tube: Fixed scale of 200 divisions can be calibrated in wavelengths
Ocular: 18 mm / 90 mm
Objective: 18 mm / 180 mm
Flint Prism: 60°, dispersion C–F = 2°, base length 20 mm, height 30 mm
Optional Accessories: 1714 Scale illumination for memory and wavelength scale; 1717 wavelength scale; 1718 spare prism; GL1 spare lamp 12 V / 1 W
