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Aluminization of the 200 inch Hale Telescope Mirror at Palomar Observatory

Please do not rely on them 100% and check with a datasheet if possible. It may be correct but it also may be of any product in the range. Inspection mirror, telescopic, 34.25inch nwk pn 80557 this item is in the category industrial\electrical equipment & supplies\electronic components & semiconductors\other electronic components.