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Old 09-06-2015, 07:34 PM
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Eric H Eric H is offline
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Join Date: Jun 2002
Location: So. Calif
Posts: 11,565
Some, or maybe all of the 10 & 12 inch round tubes have a getter in the neck, and another in the funnel near the Anode. Sometimes there's a window where it's visible, or maybe it's only visible when the Dag coating has flaked off.
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