This is a Digimatic bore gauge that lets you take digital inside measurements with amazing accuracy even at the maximum 2m depth. The ABSOLUTE Digimatic Bore Gauge offers you the following benefits: 

• Precision bore gauge lets you easily measure the diameter of deep bores without loss of accuracy. 
• You can store and recall up to 3 sets of master values and upper/lower tolerance values at the push of a button. 
• GO/±NG judgement can be set. 
• Up to max. four extension rods (250 or 500mm) can be used.