Phasics is innovating in optical metrology with a new instrument able to measure both transmitted and reflected wavefront error (TWE/RWE). Coated and uncoated optics can be qualified over a diameters from 30 to 150 mm at their working wavelengths. The Kaleo MultiWAVE is an advantageous alternative and cost-effective solution to the purchase of several interferometers. The system offers a measurement accuracy comparable to Fizeau interferometry.