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\$\begingroup\$ Tried a Google image search? You'd soon find the answer if you did. \$\endgroup\$ – Finbarr Commented May 18 at 14:08 -
three \$\begingroup\$ UK MoD perchance? \$\endgroup\$ – Kartman Commented May 18 at 14:13 -
two \$\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\$ – Darrel Hoffman Commented May 19 at 18:51 -
two \$\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
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two \$\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 -
one \$\begingroup\$ @Wossname That is probably an Ordnance Survey benchmark . \$\endgroup\$ – avid Commented May 18 at 22:57 -
one \$\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\$ Commented May 18 at 23:27 -
one \$\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