ZYGO ZMI-2002 8020-0211-1-J Laser system measurement board card

ZYGO ZMI-2002 8020-0211-1-J Laser system measurement board card.Zygo is a manufacturer headquartered at Middlefield, Connecticut that specializes in optical systems and equipment.  Their metrology product lines include 3D measuring microscopes using coherence scanning interferometry, laser Fizeau interferometers for testing optical components, laser displacement interferometers, and heterodyne optical encoders for stage position metrology（ZYGO ZMI-2002 Card Module）