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(Klikken: 127;website toegevoegd: Dec 8, 2013)

Beschrijving:

Quartz, crystals (fundamental, overtone), Oscillators, DIL-8 DIL-14, Bosscreen, Arca, Cambo, Horseman, Linhof, Plaubel, Silvestri, Sinar, Toyo, glasscreen, groundglass, lens, prism, achromat, filter, flat, mirror, window, vacuum coatings.