Modern engineer pointing at sketch in blueprint while explaining it to colleague Pointing at sketch Sizes: 640 × 427 / 1.024 × 683 / 768 × 512 / 640 × 427 / 350 × 230 / 380 × 249 / 650 × 427 / 825 × 542 / 304 × 170 / 370 × 247 / 1.200 × 800
