دیکشنری تخصصی مهندسی نفت - نسخه آنلاین

n: the name used for the working platform of the derrickman. or the monkeyboard. when it is located at a height in the derrick equal to approximately four lengths of pipe joined together. Compare double board, thribble board.

n: the hight of eighty board is the four drill pipeshight.