Appeared in
Their weight ranged between 2.5 and 4 tons, the pressure of the cams was 4.2-7 kg/cm2.Modern «heavy» fist rollers appeared in the 30s to compact earthen dams and road embankments.
Their weight ranged between 2.5 and 4 tons, the pressure of the cams was 4.2-7 kg/cm2.Modern «heavy» fist rollers appeared in the 30s to compact earthen dams and road embankments.