Scissor lifts are used where less reach and height, but more workspace and lifting capacity, are required. These use linked, folding supports that draw together. While smaller, battery powered machines are used in warehouses for stock checking, or in maintenance tasks, large diesel powered machines with 4WD are used on construction sites for cladding installation or other heavier construction work. It is designed to provide larger platform work areas and allow for heavier loads than boom lifts. Boom lifts are useful for applications that require high reach capability.