\textbf{181.} The instrument shown below is used to measure length. What is the name of this instrument and what is its measurement error?
\textit{[Figure: Image of a micrometer reading 20083]}
\begin{enumerate}
\item[(1)] Micrometer and $0.001\,\text{mm}$
\item[(2)] Caliper and $0.001\,\text{mm}$
\item[(3)] Micrometer and $0.003\,\text{mm}$
\item[(4)] Caliper and $0.003\,\text{mm}$
\end{enumerate}