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Vintage Telephony and Telecomms Vintage Telephones, Telephony and Telecomms Equipment |
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4th Nov 2011, 7:39 am | #21 |
Pentode
Join Date: Jan 2011
Location: Auckland New Zealand
Posts: 175
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Re: GPO Portable Volt Meters
Interesting information. As I mentioned previously, the history of this universal design interests me. The fact that one could be purchased so cheaply 60 years ago, surely indicates that at that time it had become redundant and was offered as surplus equipment. But on second thoughts I recall just how much 2/6d could pay for, at that time in my life.
I wonder when they were first introduced, and when they actually became redundant. It would appear that this was a long lived and therefore a significant piece of test gear. |
4th Nov 2011, 3:02 pm | #22 |
Retired Dormant Member
Join Date: Jan 2010
Location: Coventry, Warwickshire, UK.
Posts: 339
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Re: GPO Portable Volt Meters
We referred to it as Detecter No 4 ,though .Great for finding HR faults ,as it was a very low ohm/volt meter ( somewhere about 500/volt -but it's over 40years since I last saw one).Great to use on the old manual exchanges to find things like dicky cords .Other meter of the period was the SA tester .Only blokes with radio ( this place was up north with VHF links to the Inner Hebries) got an AVO as well .
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8th Nov 2011, 8:51 pm | #23 |
Retired Dormant Member
Join Date: Nov 2011
Location: Nottingham, Notts. UK.
Posts: 43
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Re: GPO Portable Volt Meters
Writing about this has reminded me that many years ago when I was trying to find out more I saw a reference in a book to an AC adaptor which attached to the 10 Ma terminals and allowed measurement of (I think) 5 and 50 volts AC This was supplied with the No 4 and was about the same size.
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