Boasting

An Englishman, an Irishman and a Scotsman were carpenters and were boasting about The high degree of accuracy they used in their work.
'I work to The nearest hundredth of an inch,' said The Englishman.
'I work to The nearest thousandth of an inch,' said The Scotsman.
That wouldn't do me at all,' said The Irishman, 'I have to get it dead right.'