11.   The results are also accurate to within four-tenths of an inch.

12.   This high-tech compass uses a patented magnetic sensor that was developed for the U.S. military and is accurate to within two degrees.

13.   A recent test found his method was accurate to within one bill, a discrepancy he blamed on a few dirty notes.

14.   Exit polls in Peru historically have been accurate to within about five percentage points of the final outcome.

15.   Exit polls in Peru historically have been accurate within about five percentage points of the final outcome.

16.   Japanese exit polls are generally accurate within a fairly narrow range.

17.   Neither gave a margin of error, but they are generally accurate to within three percentage points.

18.   Johnson said the measurements were accurate to within one percent.