511-712-20 2-Point Inside Measuring Instrument Bore Gauge 35-60mm 0,01mm

This is a bore gauge that automatically self-centres via a centring bridge and offers you the following benefits:
It reduces the influence of heat from the operator's hand by 50% by making the grip hollow structured, thereby retaining high accuracy measurement.
Interchangeable washers (0,5 mm thick) are supplied as standard accessories, so you can enable setting in small steps.
Contact points are carbide (>18 mm range), giving you high durability and wear resistance.