Federal News Radio continues to highlight unorthodox ways that some feds spend their days in our week-long Cool Jobs in Government series. Most of us take for granted that medicines are usually dispensed in pills or capsules by the milligram, and that a sack of flour or sugar is usually dispensed by the pound. But who determines officially just what a milligram or a pound actually is? Federal News Radio's Max Cacas takes us to the National Institute of Standards and Technology in Gaithersburg, Maryland.