\textbf{169-} The volume of an object is $2.4 \times 10^{-3}$ m$^3$. What instrument was used to measure this?
(Measurement precision: ruler $0.1$ cm, vernier caliper $0.01$ cm, micrometer $0.001$ mm, and tape measure $0.1$ cm.)
\hfill (1) Vernier caliper \hfill (2) Micrometer \hfill (3) Ruler \hfill (4) Tape measure