ROLLER, TOWED, PNEUMATIC TIRED. A TOWED PIECE OF EQUIPMENT CONSISTING
OF A PLATFORM OR HOPPER-TYPE FRAME FORLOADING WITH BALLAST, MOUNTED ON
A GROUP OF SMOOTH-TREAD PNEUMATIC-TIRED WHEELS WHICH HAVE AN
OSCILLATING ACTION. IT IS USED FOR COMPACTING, TAMPING, AND KNEADING
SOIL, ROCK, AND SIMILAR MATERIALS.
