This improvement, which was lately patented, great-painting sooner; but no matter how good the subse ly enlarges the scope over the'usual form of level, mak-quent coatings of paint are, they cannot·be effective if ing it available, for leveling lengths of 100 feet or more founded on an original coating which' has commenced and for shorter lengths ,without the straight edge com-to crack or pee l: monly used.