begin{circuitikz}[american voltages, american currents, european resistors]
draw
(0,0) to[voltmeter, rotate=0] (0,4)
      to[ammeter] (4,4) -- (4,0)
      to[I,/tikz/circuitikz/bipoles/length=1cm, n=S1] (0,0)
      to [esource,/tikz/circuitikz/bipoles/length=2cm] (0,0)
;
end{circuitikz}