There seems to be a general consensus prevailing in the engineering community that conversion to S.I. metric units of measure poses no problems. If charts showing metric equivalents are evaluated, this appears to be the case. However, as Metrication is analyzed from the viewpoint of thinking in metrics and performing calculations entirely in metrics, various standards, procedures, and techniques must be followed. For this reason, familiarity with metric units is gained by associating them with physical sizes and quantities plus making everyday calculations in S.I. metric units.
