https://www.putzmeister.com/documents/20152/9225696/CT_2059-12_EN_MX Stationary Booms.pdf/293eed5c-de7b-24fb-f96e-4312ea541227
https://www.putzmeister.com/documents/20152/9225696/CT_2059-12_EN_MX Stationary Booms.pdf/293eed5c-de7b-24fb-f96e-4312ea541227