MITUTOYO 2-Punt bi.meettaster 511-204-20 10-18,5mm, 0,01mm

2-Point Inside Measuring Instrument
Series 511
These are bore gauges that automatically self-centre via a centring bridge.
They offer you the following benefits:

• A long plunger stroke gives you amazing accuracy.
• 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.
• A large grip reduces heat transfer from the operator by 50%.