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Lightbridge Knob and Spring Kit for 12" primary mirror adjustment. Upgrades the stock primary mirror springs and collimation screws / knobs. This is essential for models earlier than 2008. Recently Viewed ProductsLoading:
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Lightbridge Knob and Spring Kit for 12" primary mirror adjustment. Upgrades the stock primary mirror springs and collimation screws / knobs. This is essential for models earlier than 2008. Recently Viewed ProductsLoading:
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