Spitfire Formula Four OG Classic Skateboard Wheels - Set of 4 , 55mm 7 £4969 Add to basket AWS-type SC Calibration Block, Shear Wave Sensitivity Calibration, NDT Ray-Check AWS-DS Sensitivity Distance Calibration Block carbon steel test block Specification AWS-type block used for longitudinal distance and sensitivity calibration. Contains a 2.0 high section between two 4.0 sections. Measurement & Analysis Instruments Tools Ray-Check AWS-DS Sensitivity... Standard 1018 Steel/Super durable Contains a 2.0 high section between two 4.0 sections. In accordance with AWS requirements. Dimensions: 6.000 x 4.000 x 2.000 AWS does not specify a separate metric version of the DS block. In accordance with AWS requirements. Dimensions: 6.000 x 4.000 x 2.000(152.4 mm x101.6 mm x 50.8 mm) 2 years warranty DSC Distance/Sensitivity Ultraosnic Calibration Block,test Block,1018