Hardness tester

Citation

(1999), "Hardness tester", Aircraft Engineering and Aerospace Technology, Vol. 71 No. 6. https://doi.org/10.1108/aeat.1999.12771fad.003

Hardness tester

Keywords Mitutoyo, Hardness testing, Measurement

Mitutoyo's new WizHhard HR-522 three-in-one hardness tester was unveiled recently at Inspex'99. This novel product is said to undertake Rockwell, Rockwell Superficial and Brinell testing all within a single compact unit.

Also on show was a lightweight digital micrometer, Mitutoyo's MDC-Lite. The Series 293 Digimatic micrometer weighs just 215g and its slim, lightweight construction provides an easy operation.

Available in three models including metric, imperial and conversion models, features of the MDC-Lite include a zero-set key for easy origin setting and a measurement readout with large LCD characters. The metric version has a measuring range of up to 25 mm and a resolution of 0.0001mm.

Also highlighted was Mitutoyo's new LH600B linear height gauge. It claims to provide 21 types of measurement including width, centre between two points, perpendicular and 2D measurement, supported by seven optional probes including the touch trigger type. Curved surfaces may also be scanned using the automatic constant pressure mechanism.

The LH 600B incorporates air bearings, powered by a built-in compressor for ultra-fine movement as well as power or manual drive for vertical movement. The measurement range is 972 mm with selectable resolution between 0.0001mm and 0.1mm coupled with an accuracy of 2 + L/600 µm.

Many standard features are included for ease of operation, including automatic positioning and learn and repeat function to promote repeatability.

Details available from Mitutoyo (UK) Limited. Tel: +44 (0) 1264 353123; Fax: +44 (0) 1264 354883; E-mail: jon@hobwork.freeserve.co.uk