Napier''s Rods :: Napier's rods () A set of rods, made of bone or other material, each divided into nine spaces, and containing the numbers of a column of the multiplication table; -- a contrivance of Baron Napier, the inventor of logarithms, for facilitating the operations of multiplication and division..
Rodsman :: Rodsman (n.) One who carries and holds a leveling staff, or rod, in a surveying party..