I measured the laser power at the base of the periscope this morning. The power meter was located in front of the mirror directing the beam upwards. With an Ophir PD300-3W-SH power meter (S/N 171141, P/N 1Z02411), the highest value measured over a ~2 minute interval was 160.4 mW. With an Ophir 20C-SH power meter (S/N 1711175, P/N 7Z02602), the highest value measured over a ~ 2 minute interval was 169 mW. Both readings were taken using a 10 second average, with the zero offset removed using the Vega display unit.