AN IMPROVED LEVEL AND INCLINOMETER. 41 0 A MACHINE FOR GRINDING CIRCULAR KNIVES. The Pinhole Camera. Utopian Heating Arrangements. AN IMPROVED CAR COUPLING. A PORTABLE VAPOR AND HOT AIR BATH APPARATUS., scientific american, 1888-03-03
AN IMPROVED LEVEL AND INCLINOMETER. 41 0 A MACHINE FOR GRINDING CIRCULAR KNIVES. The Pinhole Camera. Utopian Heating Arrangements. AN IMPROVED CAR COUPLING. A PORTABLE VAPOR AND HOT AIR BATH APPARATUS., scientific american, 1888-03-03
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