The Massey-Harris No. 3 15-28 was produced from 1922 to 1923 as a standard-tread tractor built in Weston, Ontario, Canada. It was based on a tractor design licensed from Parrett. It features a Waukesha DU-10A 6.5L 4-cylinder liquid-cooled gasoline engine rated at 31.1 hp estimated engine power. The tractor has a 2-speed gear transmission with 2 forward and 1 reverse gears, two-wheel drive with spur gear final drives, and manual steering. It has an open operator station. The power output is claimed at 15 hp drawbar and 28 hp belt, capable of pulling 3 14-inch plows. Dimensions are 145 inches long, 76 inches wide, 68 inches high, and it weighs 5800 lbs. The belt pulley diameter is 12 inches with a width of 7 inches running at 1000 RPM. Serial numbers are located inside the right rear tractor fender.