If the piers are sold in inches, then using metric to describe them is another level of indirection, so might make the chance of error worse. Would you feel safer if he said "The piers are 91.4cm"?
It's amusing to see newspaper stories where they report high precision numbers that are obviously metric conversions like "He drove 62.14 miles to work every day" when the original source said "100km".
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If the piers are sold in inches, then using metric to describe them is another level of indirection, so might make the chance of error worse. Would you feel safer if he said "The piers are 91.4cm"?
It's amusing to see newspaper stories where they report high precision numbers that are obviously metric conversions like "He drove 62.14 miles to work every day" when the original source said "100km".