The MarOpto FI 3100 VB simultaneous phase-shifting Fizeau interferometer is a real-time, high-speed, truly vibration-insensitive metrology instrument with shutter speeds as fast as 10 µs. Ideally suited for shop/production floors, the MarOpto FI 3100 VB offers unsurpassed measurement accuracy, stability and repeatability. Mahr's new SPARC technology ensures measurement errors of less than ? / 50 with no vibration isolation.
http://www.mahr.de/de/Leistungen/Fertigungsmesstechnik/Produkte/MarOpto---Messger%C3%A4te-f%C3%BCr-die-Optikindustrie/MarOpto-Fizeau-Interferometer/MarOpto-FI-3100-VB/
