Group3 Technology's primary business is the design and manufacture of electronic equipment of two types - scientific instruments for measuring magnetic fields, and specialist control systems. The company was founded in 1983, and exports from New Zealand 99% of it's production. It currently has products in most of the world's prestigious physics research laboratories - over 120 organizations in 24 countries. Group3 produces the worlds most accurate and cost effective Hall Effect Digital Teslameter, an instrument for measuring magnetic fields. A recent development is an accurate analog output magnetic field transducer. Design, manufacture, calibration and repair take place at the company's Auckland office.