The CMARc input file Units Any units of measure may be used, but they must be consistent throughout For example, if the body geometry is defined in inches, all speeds should be in inches per second rather than feet per second or miles per hourThe CMARC input file Units • Any units of measure may be used, but they must be consistent throughout. • For example, if the body geometry is defined in inches, all speeds should be in inches per second rather than feet per second or miles per hour