I was thinking about Pat's terminology for old, superseded non-metric measurements, and looked through all the various terms suggested - WOMBATs, FFUs, etc.
I came up with SAMs - Stone Age Measurements. I've found it quite effective - just slightly derogatory without causing offence, often met with a chuckle, sometimes with an apology, occasionally with a question (not that often, surprisingly; it seems that a majority of people here in the UK know you are referring to their use of imperial rather than metric). It's also short and succinct. John F-L
