混凝土回彈儀.木箱精包裝,數(shù)值精度高.出口產(chǎn)品.Thisproductcompletelyconsistentwithnationalandindustrytechnicalspecificationandstandard asfollows:ASTMC805,BS1881:202,NFP18-417,DIN1048and UNI9189.Specifications: Nominalkineticenergy:2.207J; Stiffnessofstriketensionspring:785 40(N/m);