A grader, also commonly referred to as a road grader, motor grader, or simply blade, is a form of heavy equipment with a long blade used to create a flat surface during grading. Although the earliest models were towed behind horses, and later tractors, most modern graders are self-propelled and thus technically "motor graders".
Veekmas twin-blade modern grader in Jyväskylä, Finland
Caterpillar CAT 12G grader
Grader at work
1910 Ad for an Adams Road Maintainer from J.A. Adams Company
Heavy equipment, heavy machinery, earthmovers, construction vehicles, or construction equipment, refers to heavy-duty vehicles specially designed to execute construction tasks, most frequently involving earthwork operations or other large construction tasks. Heavy equipment usually comprises five equipment systems: the implement, traction, structure, power train, and control/information.
Heavy equipment vehicles of various types parked near a highway construction site
Wheel Loaders and other industrial trucks parked
horse-drawn Fresno scraper digging water-supply ditch
A portable engine; a precursor to modern engineering vehicles