The R 7 - R 139 grinding gauge from Hegner is a practical accessory for the HEGNER HSM 300 disc sander. It features user-friendly handling and is equipped with a stop and two metal pins of varying lengths, allowing for precise application. The numbers are burned in, which further enhances readability and usability.

Made from high-quality raw wood, the gauge provides a robust and durable solution for grinding tasks. It is specifically designed for use with grinding machines and ensures accurate and efficient processing of workpieces. The brown color group and wood material group highlight the product's natural aesthetics.

The gauge is an essential tool for anyone who values precision and quality in their grinding work. It is suitable for both professional applications and hobby use, contributing to increased efficiency and accuracy in cylindrical grinding.