• Precision mechanism with ø50mm dial and locking rotating bezel, offering an accurate method of measuring a bore or detecting a taper or ovality.• Measuring Range: 10-18mm.• Will indicate the deviation from set size by up to 5mm with an accuracy of 0.01mm.• Probe body, dial indicator, anvil and spacer rings are also included.• Supplied in wooden storage case.Precision mechanism with ø50mm 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 5mm with an accuracy of 0.01mm. Probe body, dial indicator, anvils and spacer rings are also included. Supplied in wooden storage case.• Precision mechanism with ø50mm dial and locking rotating bezel, offering an accurate method of measuring a bore or detecting a taper or ovality. • Measuring Range: 10-18mm. • Will indicate the deviation from set size by up to 5mm with an accuracy of 0.01mm. • Probe body, dial indicator, anvils and spacer