When it comes to dosages of cold medicine, your kitchen spoons may not be measuring up. Using spoons to measure medicine may be causing you to under or overdose, according to new research in the Annals of Internal Medicine.

“Spoon dosing has been identified as 1 of the 3 major causes of dosing errors and pediatric poisonings,” authors of the study wrote. “Most persons still use spoons when pouring medicine for themselves and their families.”

Another reason why use metric system only:

In a recent thread on the Bentley newsgroups, we came across some confusion about the differences between an International Foot and a U.S. Survey Foot.

We thought it would be fun to shed some light on what these “feet” are and how much measurements would deviate due to the difference in unit length.