Symbol used on desktop calculators for the "total" function, according to ISO 7000 symbol 0656 "Total", showing a vertical spoke. The symbol is similar to the telephony symbol from ITU-T Recommendation E.161 (1995-05) (U+26B9 ⚹ .mw-parser-output .smallcaps{font-variant:small-caps}sextile), which differs by showing a horizontal spoke.
Own work
This  vector image was created with Adobe Illustrator.