Caliper Micrometer Inner Diameter Outer Diameter Calibration Block Rod Bar Gauge Bar Ring Gauge Range:25mm 50mm 75mm 100mm 125mm 175mm 200mm Accuracy:+-0 Attention:according to industrial standardDue to different Monitor, the color may have differenceDue at hand measure ,Please allow 1-3% distinction toleranceDue to lengthy shipping, the article may possibly injury in transit, if the thing damage, pls touch us initially straight before leave feedback, thank you on your understandingkindly note: this link not encompass caliper and micrometer