[Tex/LaTex] No drawing of ohmmeter or multimeter using circuitikz

Question

I can't draw an ohmmeter in a simple electric circuit, although I am using circuitikz. If I replace ohmmeter by voltmeter or ammeter, it works fine, otherwise, not. Also, is there any symbol for multimeter?

My circuit is

\begin{circuitikz}[american] 
\draw
(0,0) to[battery] (0,4)
(0,4) to[short, o-o] (2,4) 
(2,0) to[short,o-o] (0,0)
(3,4) to[R, o-o] (3,0)
(3,4) -- (4,4) 
   to[ohmmeter] (4,0)
(4,0) to[short,o-o] (3,0)
\end{circuitikz}

Answer 1

It seems ohmmeter not defined even though it is in the documentation. However, since ohmmeter is identical to voltmeter except the text letter, you can define the symbol as follows.

\documentclass[border={5pt}]{standalone}


\usepackage[american voltages,siunitx]{circuitikz}


\makeatletter
\def\pgf@circ@myvoltmeter@path#1{\pgf@circ@bipole@path{myvoltmeter}{#1}}
\tikzset{ohmmeter/.style = {\circuitikzbasekey, /tikz/to
                               path=\pgf@circ@myvoltmeter@path}}
\pgfcircdeclarebipole{}{\ctikzvalof{bipoles/voltmeter/height}}{myvoltmeter}
    {\ctikzvalof{bipoles/voltmeter/height}}{\ctikzvalof{bipoles/voltmeter/width}}
{
  \def\pgf@circ@temp{right}
  \ifx\tikz@res@label@pos\pgf@circ@temp
    \pgf@circ@res@step=-1.2\pgf@circ@res@up
  \else
    \def\pgf@circ@temp{below}
    \ifx\tikz@res@label@pos\pgf@circ@temp
      \pgf@circ@res@step=-1.2\pgf@circ@res@up
    \else
      \pgf@circ@res@step=1.2\pgf@circ@res@up
    \fi
  \fi

  \pgfpathmoveto{\pgfpoint{\pgf@circ@res@left}{\pgf@circ@res@zero}}     
  \pgfpointorigin   \pgf@circ@res@other =  \pgf@x
  \advance \pgf@circ@res@other by -\pgf@circ@res@up
  \pgfpathlineto{\pgfpoint{\pgf@circ@res@other}{\pgf@circ@res@zero}}
  \pgfusepath{draw}

  \pgfsetlinewidth{\pgfkeysvalueof{/tikz/circuitikz/bipoles/thickness}
                   \pgfstartlinewidth}

  \pgfscope
    \pgfpathcircle{\pgfpointorigin}{\pgf@circ@res@up}
    \pgfusepath{draw}       
  \endpgfscope  

  \pgfsetlinewidth{\pgfstartlinewidth}
  \pgftransformrotate{90} % rotate the label
  \pgfpathmoveto{\pgfpoint{-\pgf@circ@res@other}{.8\pgf@circ@res@up}}
  \pgfpathlineto{\pgfpoint{\pgf@circ@res@other}{.8\pgf@circ@res@down}}
  \pgfusepath{draw}
  \pgfnode{circle}{center}{\textbf{\Large \si{\ohm}}}{}{}
  \pgfscope
     \pgftransformshift{\pgfpoint{-\pgf@circ@res@other}{.8\pgf@circ@res@up}}
     \pgftransformrotate{45}
     \pgfnode{currarrow}{center}{}{}{\pgfusepath{stroke}}
  \endpgfscope

  \pgfpathmoveto{\pgfpoint{-\pgf@circ@res@other}{\pgf@circ@res@zero}}
  \pgfpathlineto{\pgfpoint{\pgf@circ@res@right}{\pgf@circ@res@zero}}
  \pgfusepath{draw}

  \pgfusepath{stroke}   
}
\makeatother




\begin{document}
\begin{circuitikz}[thick]
\draw
(0,4) to[battery] (0,0)
(0,4) to[short, o-o] (2,4) 
(2,0) to[short,o-o] (0,0)
(3,4) to[R, o-o] (3,0)
(3,4) -- (4,4)  to[ohmmeter](4,0);
\end{circuitikz}
\end{document}

The result is