20
\$\begingroup\$

I keep seeing this symbol on old electronics appliances of varying types.

enter image description here

Two examples that I own...

Early 1960's portable "Megger" insulation tester enter image description here

July 1969 Marconi attenuator enter image description here

I have also seen this on other equipment manufactured as late as the 1980's, such as an HP 3314A signal generator.

So, it appears that this is a standard symbol, and not a proprietary one.

What does it mean?


Final edit to add another photo as supporting evidence for @Spehro Pefhany's answer

enter image description here

\$\endgroup\$
5
  • \$\begingroup\$ Tried a Google image search? You'd soon find the answer if you did. \$\endgroup\$
    – Finbarr
    Commented May 18 at 14:08
  • 3
    \$\begingroup\$ UK MoD perchance? \$\endgroup\$
    – Kartman
    Commented May 18 at 14:13
  • 2
    \$\begingroup\$ @Finbarr, yes but the symbol is so primitive that I get a large number of unrelated hits. \$\endgroup\$
    – Wossname
    Commented May 18 at 14:18
  • \$\begingroup\$ Worth noting that it closely resembles the symbol used for an antenna in electrical diagrams (though inverted). I imagine this could cause confusion on certain electronic devices. \$\endgroup\$ Commented May 19 at 18:51
  • 2
    \$\begingroup\$ @Finbarr what a classically helpful passive aggressive stack exchange answer. thanks for your contribution and assumption that OP is an idiot. \$\endgroup\$
    – riptusk331
    Commented May 22 at 0:46

1 Answer 1

23
\$\begingroup\$

The Broad Arrow (aka 'pheon') indicates that the item in question was once (British) Government property - a Crown asset.

enter image description here

\$\endgroup\$
9
  • 2
    \$\begingroup\$ There's a nice picture of a voltmeter with such a symbol in the wikipedia article too. \$\endgroup\$
    – pipe
    Commented May 18 at 14:29
  • \$\begingroup\$ Fascinating. The "Megger" device I own bears the brand "A.M." and a crown logo literally burned into its leather carry case. I didn't put these two clues together! A.M. stood for Air Ministry which later became the Ministry of Defence in 1964. I'll add a photo... \$\endgroup\$
    – Wossname
    Commented May 18 at 14:31
  • 1
    \$\begingroup\$ @Wossname That is probably an Ordnance Survey benchmark. \$\endgroup\$
    – avid
    Commented May 18 at 22:57
  • 1
    \$\begingroup\$ The use of this arrow by the UK government/military often gets mentioned on (UK) antiques programs like Antiques Roadtrip or Flog It! (including one I saw earlier today!) \$\endgroup\$
    – TripeHound
    Commented May 18 at 23:27
  • 1
    \$\begingroup\$ They put the arrows on prisoners (prison uniforms) as well. web.archive.org/web/20240519210150/https://… \$\endgroup\$
    – D Duck
    Commented May 19 at 21:02

Your Answer

By clicking “Post Your Answer”, you agree to our terms of service and acknowledge you have read our privacy policy.

Not the answer you're looking for? Browse other questions tagged or ask your own question.