Answer
Maximum possible height: 66.5 inches
Minimum possible height: 65.5 inches
Work Step by Step
When measuring to the nearest inch, the possible error would be 0.5 inches. Maximum value would be 0.5 plus measured height, 66, which equals to 66.5. Minimum value on the other hand would be measured height, 66, minus 0.5 inches which equals to 65.5.