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> Huge 6" laser optics extension tube 11" long optical
Huge 6" laser optics extension tube 11" long optical
Dont know exactly what this is but it looks like a Laser Optical extension tube , it measures about 10 3/4" flange to flange and the opening is about 6 1/2" across, came from a local aerospace company, Optical laboartory, Black metal construction, 8 holes with o-ring slot, it has some tape on it as shown and numbers etched in it also, we think its a breandboard laser optical tube made by like Spectra physics or newport NRC.
