Drill Bit Size (in.)(+/- .002) Trial 1 (s) (+/- .339s) Trial 2 Trial 3 0.171875 252.9 253.21 252.18 0.187500 213.57 212.55 211.67 0.203125 184.77 184.36 183.69 0.218750 163.95 162.51 161.03 0.250000 138.54 138.77 137.98 0.234375 124.42 124.81 122.99 0.265625 105.89 107.88 105.47 0.312500 74.14 74.21 72.85 0.375000 54.3 54.33 55.1 0.500000 29.67 29.33 29.88