I bought a box full of valves a few months ago and found this at the bottom. Can anyone tell me what it is? Is it of any use?
The metallic shank inside the glass tube has a silk screen reading "RPC Resistance Product Company, Harrisburg, PA, USA. BBV. 879 MEG 5%"
On the handle flange it says "Phillips Made in Holland Type GM 4579 1kV-30kV" and a serial number.
thanks you for your help
Jeff
The metallic shank inside the glass tube has a silk screen reading "RPC Resistance Product Company, Harrisburg, PA, USA. BBV. 879 MEG 5%"
On the handle flange it says "Phillips Made in Holland Type GM 4579 1kV-30kV" and a serial number.
thanks you for your help
Jeff
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