LOMO Fabry Perot Interferometer IT51-30, used
This is the tool for high-resolution spectroscopy. Optical range is 400-800nm, aperture is 50mm. Reflection factor is 87-92%.
10mm rings are installed. Unfortunately, surface of the rings is damaged a bit - please check pictures.
Taking such condition into account, sale will be final. No returns. So, please ask your questions before purchase. Price counteroffers are welcome.