Table 5 The mean measured errors of the tests

Mean measured distraction length error (mm)

0.07

0.16

0.09

0.17

0.03

0.05

Mean calculated distraction rate error (mm/day)

0.03

0.04

0.02

0.02

0.003

0.002

Mean calculated step error (nm)

0.05

0.06

0.06

0.06

0.02

0.02

DL error rate (%)

0.7

0.8

0.9

0.85

0.3

0.25

DR error rate (%)

3

4

2

2

0.3

0.2

Mean calculated step error rate (%)

5

6

6

6

2

2