How should the letters in circuit symbols look like / be typeset, especially the symbols for voltmeter, amperemeter, generator and motor. Should the V, A, G and M be typeset in the surrounding font (possibly with serifs), in the sourrounding sans-serif font or in a fixed (probably stylized and sans-serif) font regardless of surround fonts?

  • They should be in sans-serif.
    – morbusg
    Nov 20, 2016 at 13:26
  • @morbusg But in a fixed sans-serif font or the normal sans-serif font surrounding the graphic?
    – Toscho
    Nov 20, 2016 at 13:27
  • I don't think it matters; either one.
    – morbusg
    Nov 20, 2016 at 13:28
  • I've been trying to find an online reference for my claim for the past hour or so, but haven't been able to find one. So it might just be a memory from my school or school book, so take it with a grain of salt.
    – morbusg
    Nov 20, 2016 at 15:00

1 Answer 1


As far as I know, there is no indication in the standards of the International Electrotechnical Commission (IEC), or in similar ones from IEEE, about the font family that has to be used in electrical symbols.

What is required is to follow the style rules of the International System of Units.

Thus, for example, the "V" in the voltmeter symbol represents the unit volt, and it should be typeset in an upright shape (not $V$), but the font family can be that of the surrounding text.

  • I posted the same question in the electrical engineering branch of stackexchange and there the answer was to use a DIN standard font (DIN being the German standardising institution and their standards).
    – Toscho
    Dec 5, 2016 at 17:50

You must log in to answer this question.

Not the answer you're looking for? Browse other questions tagged .