Profile: Gaertner Scientific Corp. manufactures astronomical and astrophysical measuring instruments. Our brands include StokesMeter™, and Waferskan Ellipsometer™. We are engaged in the design and manufacture of a variety of precision scientific instruments intended for use in research, industrial, educational and government laboratories. Our main products are ellipsometers for thin film measurement, measuring microscopes for dimensional measurements as well as other specialized optical instruments. Ellipsometers give non-contact thickness and refractive index measurements of thin transparent and semi transparent films to 1 angstrom or better. We offer laser ellipsometers that are flexible and upgradeable to meet varied user requirements in the semiconductor, solar cell, bio-chemical, flat panel and other thin film industries.