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Subject:Rule of thumb From:David Dubin <David_Dubin -at- NOTES -dot- PW -dot- COM> Date:Fri, 17 Nov 1995 08:09:29 EST
The most widely accepted origins of this deals with carpentry. The distance
between the tip of the thumb and the first joint on an adult man is about one
inch. Carpenters have used that in past times as their ruler for rough
measurement, ergo RULE of thumb.
david dubin -at- notes -dot- pw -dot- com@Internet
This has been one man's research, yours may vary with mileage.