[USMA:33165] rule of thumb

[john mercer]

I have a question. Would a good rule of thumb for converting yd's to m be yd's minus 10 percent = m? I no this isn't very accurate and couldn't be used for building but maybe be alright for conversion in every day use. Does anybody know in catalogs when the dimentions of furniture or appliances or anything else are the dimentions exact or approx? Thanks for your time and help. I really enjoy this site a lot.