Mahr updates digital calipers

The new Reference System available on Mahr's latest generation MarCal digital calipers is designed to be a significant time-saver for operators but is only one of several design improvements that contributed to a recent German award for excellence in innovation and quality.

Unlike older models, which require the zero position to be re-set whenever the caliper is switched on, the MarCal reference system retains the zero setting. This means the instrument is ready to measure whenever it is turned on or the jaws are moved. A convenient Reference Lock protects the setting from operator error, while the new Reference System is inherently energy efficient – providing up to 50% longer battery life than previous models.

Resolution of the award-winning MarCal 16 EWR model (available in three versions with maximum measuring ranges from 150 to 300 mm) is 0.01 mm, with an error limit of 0.03 mm (0.05 for the 300 mm version). In addition to offering a wide range of sizes and blade/anvil configurations, the optional W-designated MarCal digital calipers provide dust and water, coolant and lubricants immersion protection to class IP67 (total dust ingress protection and protection against the effect of immersion to one metre depth).

Options across the range include depth gauges, units with blades for ID and OD measurements, and a Universal set that includes standard accessories to measure recesses and grooves, threads, bores, serrations and more.

Lapped rather than ground guide way surfaces with 'dirt wipers' integrated in the slide ensure smooth slide operation and sensitivity, while significantly extending service life.

Ergonomic improvements include a non-slip thumb support and a high-contrast LCD display featuring 8.5 mm-high digits for fatigue-free reading of the measured results.

Documenting measured data for SPC purposes is made simple via the three data output options provided by the MarConnect interface. USB-ready devices allow direct connection to a PC, enabling users to transfer measured values directly into Microsoft Excel or other applications; a Digimatic interface allows connection with compatible evaluation devices; and an RS232 interface allows connection to older models of PC.

Author
Andrew Allcock

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Mahr UK plc

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