witness-mark n.— «Wherever you wanted to cut off, the valve gear could e put at that notch or clamped at that place, which will bring the “cut-off” witness mark right for cutting off.» —by Robert Grimshaw Supplement...
witness-mark n.— «Wherever you wanted to cut off, the valve gear could e put at that notch or clamped at that place, which will bring the “cut-off” witness mark right for cutting off.» —by Robert Grimshaw Supplement...
