OREGON 563474 Manual Arahan Helmet Keselamatan Gergaji
563474 Chainsaw Safety Helmet Instruction Manual 563474 Chainsaw Safety Helmet Tested according to ANSI 512.42-2010 ATTENUATION DATA Frequency Hz 63 125 250 500 1000 2000 4000 8000 Grand Mean Attenuation, dB 9.3 11.2 12.8 24.8 36.5 38.7 34.4 33.9 Standard…