YUSHI 10 step calibration blocks, metric 10 step blocks and inch 10 step blocks 4 models optional, leave us messages that which models you ordered please, or will delivery the default model 1-10mm 10 step 1018 steel block, noted please, thanks.
Standard material is 1018 steel , OEM Service Support, if you have demand to the stainless steel or aluminum, feel free contact us pls, thanks
Various kinds ultrasonic calibration step blocks have, any interested or demands, feel free contact us pls, thank you.