The ‘Extreme’ coo-rdinate measuring machine is able to operate in previous no-go areas for CMMs. It uses high precision mechanical bearings rather than the delicate air-bearings typically employed. This novel approach negates the need for a clean, dry, compressed air supply. Available in manual and CNC formats, the cost-effective Extreme has a generous measuring envelope of 400 x 400 x 400 mm, and a resolution of 0.5 um.