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Surface roughness gauges for machine tools

Surface roughness gauges by BLUM are used for fast and automatic inspection of workpiece surfaces in machining centers and turning machines. Specially designed for the harsh conditions in machine tools, they are an effective solution for improving the accuracy of your workpieces and the productivity of your manufacturing lines.

Roughness gauges inspect the surface finish of a workpiece inside the machine tool and provides feedback directly to the machine's control. This type of measurement device uses a pulling movement to measure the amount of deflection as it relates to the distance traveled to evaluate the surface texture of the part. Data generated can provide valuable information related to the cutting parameters which can provide insight to improve the manufacturing process. 

Roughness gauges are mounted directly into the machine's spindle and can communicate with the machine tool's control wirelessly. The CNC program can be modified to measure various workpieces within the same machine tool providing:

  • Roughness measurement


BLUM offers a steadily expanding selection of roughness measuring systems for machine tools.

Blum-Novotes Roughness Gauge Probe

TC63-RG | TC64-RG | TC76-RG

Roughness measuring system for precise evaluation of surface roughness of workpieces.

  • Roughness measurement
Blum-Novotest TC63 Roughness Gauge

TC63-RG Single

Surface roughness gauge specifically for checking the surfaces of plane workpiece geometries in milling, turning and grinding machines. 

  • Roughness measurement

Key Features:

  • Automated roughness measurement without manual operator intervention
  • Enhanced in-process reliability by elimination of manual and downstream tests
  • Reliable measurements also under coolants
  • Mechanically robust design
  • Enable low-manned operation
  • Realize continuous process chains
  • Determine problems of the cutting process
  • Use of the expensive tools until the real end of the service life

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Ensure you produce the right part the first time.

In-process measurement has become an integral element of CNC machining because it helps ensure you produce the right part the first time. This is because the process allows parts to remain inside the CNC without disrupting the machine setup while inspection is being conducted. The measurement device is connected directly to the machine control, therefore data feedback can be analyzed and then displayed via the machine's interface. Rework is possible by compensation of the tool wear or workpiece origin based on the measurement analysis. 


Focus on productivity.

Utilizing in-process measurement can help to increase productivity by improving part accuracy the fist time and reducing scrap from rejects, all with minimal or no operator intervention. In addition, in-process measurement collects important data that can be used to provide insight to better understand and improve the manufacturing process. 


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The BLUM MeasureXpert Advantage:

  • Engineered for the Machine Tool. BLUM probing systems did not evolve from a CMM probe. All BLUM products were designed and manufactured with an IP68 rating to perform reliably and precisely even within the harsh environment of a machine tool. 
  • Time is Money! Thanks to the unique design and opto-electronic signal generation, BLUM Touch Probes achieve probing speeds of up to 3 meters or 120 inches per minute with just a single touch measurement.
  • Fast. Precise. Reliable. DIGILOG technology brings in-process reliability to a new dimension. The constant data pool generating thousands of measuring values per second allows for automation in t he manufacturing process while providing a huge time savings. 


BLUM is an innovative partner to numerous industry sectors and a long-standing supplier to the global machine tool industry. From individual mold and die makers all the way to large corporations in the automotive and aerospace industries - the high efficiency, precision and reliability of production metrology by BLUM makes it an indispensable instrument for many successful companies.