This device is a mystery. Elesta made gas filled relays and counting tubes but with the insides obscured and no data found this remains unknown. Through the clear glass base can be seen a ceramic disc.
The coating hides all of the interior.The thin glass tube envelope is 20 mm in diameter and, excluding the B9A base pins, is 48 mm tall.Reference: Observation. |
Updated May 22, 2023.
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