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The updated Linear range of compact length-measuring instruments from Mahr is capable of fast and precise measurement of internal and external workpiece dimensions.

The range comprises three new models: Linear 100 (application range 0-100mm), Linear 800 (0-800mm) and Linear 1200 (0-1,200mm), all of which are DN EN ISO 9000 compliant.

These Linear units are also suitable for checking measuring devices such as micrometers, depth gauges and calipers.

In any of these applications it is possible to switch from internal to external measurement at any time without needing to recalibrate, with interchangeable anvils contributing to optimum part measuring.

Suitable for shop floor use, the Linear range offers a sub-micron measurement capability for the precision machinist when measuring both lengths and diameters.

This capability allows multi-faceted tasks such as the measurement of gear ODs to be completed quickly.

A damped measuring spindle with adjustable measuring force ensures that measured results, both internal and external, are independent of the user and provide reliable and consistent data over the entire measuring range.

With this in mind, the design of all three Linear models features a solid cast body to avoid stresses and twisting error.

Resolution is switchable (0.1um, 1um, 5um), with measured values displayed on a Unitron twin-channel digital display.

This 10-digit display has a large number of measuring functions and an RS232 interface to transfer data to PCs.

Optional Optoface software allows measured values to be transferred to Windows programs such as Microsoft Excel.


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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