jack board

a device used to support the end of a length of pipe while another length is being screwed on

Jack Board

John Henry Board (23 February 1867 – 15 April 1924) was an English cricketer who played in six Tests from 1899 to 1906. Jack Board was a wicketkeeper and a right-handed batsman who started out as a tail-ender but developed into a useful player who often opened the innings for his county, Gloucestershire. Picked by W. G. Grace out of Bristol club...
Found on http://en.wikipedia.org/wiki/Jack_Board
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