DT: yes I see indeed. Generic gauge; specific bore diameter. The Ithaca catalog page reproduced by Walt Snyder is "bilingual" but without the refinement of meaning. The trouble with water table as a borrowing from the lines upon which a ship or boat sits empty or loaded is that no one I know has ever seen the word table used after "water" or "Plimsol" in that context. "Projecting ledge or string course" from achitecture seems more likely. I like the "detonating" from Brit shop lingo but have never construed it to be derived from the ballads of long-haul trucking, as in "36 tons of detonatin steel, over eighteen wheels that smoked and squealed. Had to ride er down, I couldn't jump free. Or there'd be a big hole where that little town uuuuused to be." --"Nitro Express"

jack