Abstract: A dolly is disclosed having a vertically adjustable shelf attachable to independent vertical side rails resting on a surface, the rails constituting legs for the support of the shelf, two of which are wheeled, the shelf having a pair of laterally and oppositely attached wheels which can be lifted with the shelf from the bottom to the top of the legs to render the device stationary and permit a weight to be supported on the shelf. When the shelf is lowered on the rails to its lowermost position, all four wheels contact the surface for movement of the dolly from one location to another. In either mode of use, a weight is supportable on the shelf. In another form of the dolly, a storable handle bar can be attached near the top of the legs to permit use as a hand truck when the device is in the mode of use which allows movement of a supported weight. With the first form, movement along a surface is contemplated, while in the second form, movement up and down stairways is also possible.