Useful Metric Conversions We in SAR frequently have problems with metric conversions. In an attempt to clarify the conversion process, here are some helpful hints: 1 million microphones = 1 megaphone 2000 mockingbirds = two kilomockingbirds 10 cards = 1 decacards 1 millionth of a fish = 1 microfiche 453.6 gram crackers = 1 pound cake 1 trillion pins = 1 terrapin 10 rations = 1 decoration 100 rations = 1 C-ration 10 millipedes = 1 centipede 3 1/3 tridents = 1 decadent 2 monograms = 1 diagram 8 nickels = 2 paradigms 2 wharves = 1 paradox