Thread: What is it?
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Old 5th Aug 2022, 9:45 pm   #1
Join Date: Dec 2015
Location: Crawley, West Sussex, UK.
Posts: 23
Default What is it?

I've inherited the device in the attached picture from my ex EKC0, MEL, Philips engineer father-in-law.
Within are two ECC81 valves. The magic eye is labelled "Power Factor". The case is very similar to another which I have with a Marconi label on it.
Any ideas?
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