- Mar 10, 2013
Yes. A long time ago I did photographing of one of these with the intent of making a review of one In detail but I never found the time to type it up. Maybe I should do that. I also have a couple of the 124 which is the next size down, is one of the oldest helium neon laser models. The Original version had a hot filament instead of a cold cathode, and was very quickly scrapped and retrofitted into a cold cathode version along with the rest of the set-it was a part of a set with the 122 in the 123, which were quickly discontinued and only the 124 remained in production, they're all identical, but different lengths. I actually own the preliminary manual for them. All four of them had a shared exciter which could be configured the factory to run any of the three. It was quite a unique piece of equipment at the time, back before there was a normal/standard on how to make a HeNe.