2-Point Inside Measuring InstrumentSeries 511This is a short range application Bore Gauge Set that automatically self-centres via a centring bridge and offers you the following benefits:<ul><li>It reduces the influence of heat from the operator's hand by 50% by making the grip hollow structured, thereby retaining high accuracy measurement.</li><li>Interchangeable washers (0,5 mm thick) are supplied as standard accessories, so you can enable setting in small steps.</li><li>Contact points are carbide (>18 mm range), giving you high durability and wear resistance.</li></ul>