ÄPRE’s state-of-the-art Fizeau & LUPI interferometers, with ÄPRE patented and proprietary light sources, provides you with an interferometer system like no other. No other interferometer has nearly the range of applications possible from ultra-thin 0.075 mm substrates without surface preparation, to Radius/Form/MSF in one measurement. The performance is based on exceptional design, with camera limited resolution up to 9-Mpixels, <0.1 % image distortion and <λ/20 retrace errors at slopes up to 512 fringes/aperture. Select from four interchangeable sources including SpectrÄ SCI, proprietary wavelength shifting ÄTLas, bright laser diodes or HeNe lasers to configure your system. ÄPRE gives you more choices now and in the future. ÄPRE interferometers, simply engineered like no other.