Figure 5.

Alignment reproducibility of the laser positions for (a) the proposed method and conventional methods using (b) high‐ and (c) low‐accuracy levels: (a) $\mathrm{m}=32.3,\sigma =0.93$, (b) $\mathrm{m}=33.4,\sigma =1.49$, and (c) $\mathrm{m}=35.9,\sigma =2.76$, where m and σ denote the mean value and standard deviation of the laser position in mm units, respectively. The resolutions of the levels used in proposed and conventional (with a high‐accuracy level) methods were $0.05\hspace{0.17em}\text{mm}/1,000\hspace{0.17em}\text{mm}$ and $0.44\hspace{0.17em}\text{mm}/1,000\hspace{0.17em}\text{mm}$, respectively.