Salesman's sample road grader, Adams Leaning Wheel Grader in orig carrying case w/metal maker's tag reading "J.D. Adams & Co., MFR'S Road Building Machinery, Indianapolis, Ind.". A true engineering marvel in miniature. So named as the front & back wheels adjust w/the turn of cranks when pulled behind a team or horses or oxen. Working levers & gears allow for a full range of movement w/the blade. This fine nickel-plated example is stamped "309" & has both a maker's tag & Adams Leaning Wheel Grader tag on both sides. It's by far the finest & most complete example you will ever see. Comes w/fitted wood platform, weights & pulleys used to demonstrate the "horsepower" needed to operate it. This rare & desirable c.1910 salesman's sample is in Exc orig cond & measures 10.25"H x 8.5"W x 22.5"L.