The internal measuring device SU HM 20-50mm from Schwenk is a precise measuring instrument specifically designed for basic hole drilling. It features automatic centering, allowing for easy handling and accurate measurements. The deflection element ensures a play-free transmission of the probe's movement to the display, increasing the repeatability accuracy to an impressive 1 µm. The spring-loaded centering plate enables position-independent measuring, while the carbide probe ensures durability and reliability. This device is ideal for measuring internal diameters close to the bottom of the hole and is also suitable for short centering approaches. The internal measuring device comes with a holder and fixed measuring calipers in a practical wooden case, but without a dial gauge.

• Automatic centering for easy handling
• Repeatability accuracy of 1 µm for precise measurements
• Spring-loaded centering plate allows for position-independent measuring
• Carbide probe for high durability.