Sealey-DBG5010-Dial-Bore-Gauge-50-160mm-Sealey-DBG5010-Precision-mechanism-with-55mm-dial-and-locking-rotating-bezel-offering-an-accurate-method-of-measuring-a-bore-or-detecting-a-taper-or-ovality-Will-indicate-the-deviation-from-set-size-by-up-to-3mm-with-an-accuracy-of-0-01mm-Probe-body-dial-indicator-anvils-and-spacer-rings-are-also-included-Supplied-in-wooden-storage-case-Sealey-DBG5010-Dial-Bore-Gauge-50-160mm