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Mahr has expanded its range of surface-measuring systems with the Marsurf M 400 skidless instrument, which enables highly precise measurements to be carried out in the production area.

Building on the success of the M 300 system, the M 400 features the same Bluetooth interface, making this mobile instrument optionally cable-free and mains-independent with long-life batteries.

Designed with usability in mind, as well as performance, the M 400 enables the user to access and probe difficult-to-reach surfaces without compromising measurement quality.

However, if required, it can be expanded quickly and easily to a small stationery workstation using components from the Mahr range of accessories, such as the ST-G measuring stand.

The drive unit provides free measurement with a highly precise probe system and offers 26mm of tracing length with a measurement speed of 1mm/s.

Furthermore, the drive unit features the BFW 250 magnetic probe-arm mounting system, which allows quick and trouble-free changeover while reducing the risk of damage.

To add to the M 400’s ease of operation, only a few seconds of setting time are needed, due to the motorised height adjustment of the drive unit and automatic zero positioning.

The evaluation unit features a brilliant colour display and a simple menu structure.

All common surface-measurement parameters are available as per DIN/ISO, JIS and ASME standards, as well as many integrated languages.

The integral thermo printer allows results to be made available instantly, although the onboard memory means that up to 40,000 results and up to 30 profiles can be stored for later evaluation.

Mahr’s Workstation Software is optionally available, allowing results to be stored and evaluated on a separate PC.


Mahr is one of the world’s largest manufacturers in metrology, specialising in high quality precision products and services for engineers.

Company – Mahr– Manufacturing in the UK continues to be an important growth industry, generating 10% of GVA and comprising 44% of exports. With strong growth comes faster, more precise manufacturing. Smaller components require less margin for error and more stringent quality control.

The importance of metrology in modern manufacturing has never been more prominent. Providing the crucial information for quick, reliable measurement to support and inform decisions. Metrology has the power to drive manufacturing excellence.

Since developing our first Vernier calipers back in 1868, we have accumulated over 150 years’ of metrological expertise. Producing the world’s first digital indicator and microprocessor controlled roughness-measuring instrument. We now hold over 10,000 different products and we continue to drive the leading edge of innovation in modern metrology.

Our highly trained team operates from 52 countries across the globe. Driving metrological research, high quality production whilst supporting our valued customers.

Our trusted measuring instruments feature in all manner of prominent processes from automotive and aerospace manufacturing to biomechanical research and mechanical engineering. Wherever precise measurement is required, there is a Mahr tool for the job. From caliper’s to high-end customised measuring systems you can rely on Mahr for low measuring uncertainties and well manufactured instruments built to last.

We aim to ensure the quality of every product manufactured. Every service undertaken and every procedure implemented in order to satisfy our customer needs. Many of the Mahr group companies have certified quality management systems that comply with DIN EN ISO 9001:2008.

We let precision speak! We make it our job to ensure that the results are accurate. Our range of products extends from calipers to customized high-end measuring systems with direct connection to your production process.

HANDTOOLS – Vernier and Digital Calipers, Digital and Dial Comparators, Micrometers, Measuring Tools and Inspection Equipment, Standard Gauges and Gauge blocks, Electrical Length Measuring Instrument and Air Gauges, Universal Measuring Instruments, Test Indicators and 3d Touch Probes, Interfaces and Data Processing, Roughness and Contour Instruments, Comparator and Indicator Stands, Dial and Digital Indicators, Indicating Measuring Instruments, Height Measuring Instruments

SYSTEMS Profile – Roughness and Contour, Form Measurement, Precision – Reference Systems, Geometry – Gear Metrology, Custom – Bespoke Inspection, Shaft Measuring Systems, Optical Measuring Instruments

SERVICES – Mahr Training, Application Specialists, Technical Service and Maintenance, Repair and Product Upgrades, Calibration Services, Warranty Of Systems/Products, Subcontract Measurement Services, Consultancy – Measuring Strategies

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