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The main RC providers like OGS, RCOS etc, make their scope to very high standards with machining etc. Not because of competition or asthetics, but actual rigidity, and strength. Like Guy said, its a must, not an option.
These scopes have so many adjustments and sequences needed to do a complete alignment, that you need to make sure it holds night after night.
It can be a frustrating event, or a simple one, depending on experience of the user.
We are talking tolerances of a mm or less in some areas, and pictures are garbage. Delicate instruments require precision to maintain precision.
Theo.
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