Input (grade 3): At 5 ft 4 in (1.62 m), Burnham was slight, but he was also muscular and bronzed, with a finely formed square jaw.
Output (grade 4): At 5 ft 4 in (1.62 m), Burnham was slight, but he was also muscular and bronzed, with a finely formed square jaw and steady, grey-blue eyes.