Errors introduced by the instruments

$\parbox{2in}{\raisebox{-1.2in}{\includegraphics[height=1.2in]{FIGS/fig1.1.ps}}}$ $\parbox{4.5in}{% For the circuit diagram shown, what is the voltage ... ...diagram including the Th\'evenin equivalent representation of this voltmeter. }$

Using one or two resistors and the $+5$V power supply of the breadboard system, estimate the internal resistance of the DMM when used as a DC voltmeter. Compare your result with the posted specs of the DMM.