I'll address some issues all at once here. Kenny and EdZ: I agree that 100 feet or 100 yards is way too close for comfort. I wanted to imply that that is THE INITIAL adjustment in my lab (basement). It is only a fine tune.
Now, as I hope that I conveyed, the fine, fine tune and correction comes at an "almost" infinity distance--actually about four mile away!
CFC: I use either a spaner wrench tool that fits the notches in the rings. I have one tool with two sides of different thicknesses to "grab" the notches. Now, the width of the tool is adjustable over quite a large range, so this tool works for about 90-95% of what I do. This is the easiest menthod. This tool is specifically designed for ring removal/reinsertion on optical equipments.
On the happenstance that I come along an odd ball, I use a screwdriver--the small jewelry type again. I have, I think, about forty different ones.
Every so often, I have to nudge the driver/ring with a VERY SMALL hammer, one designed for jewelry (mainly for gold leaf work). On those rare occasions whereby I have to use this method, it has NEVER failed me yet.
If the black "paint" dislodges from the notch or other areas, which it usually does, I use either KODAK Brushing Lacquer (No. 4 - DULL BLACK {4 fluid ounces}) or simply a black laundy pen.
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Re: Collimate an old Jason Binoculars
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