The Seiler Objective Lens is designed for use with the Alpha Air and Alpha Slim dental/ENT microscopes, as well as the colposcope models 935, 955, and 985. The operating scopes generally come with a standard objective, but the different lengths are all interchangeable. 250 mm (50 mm = 2") gives about 10" of working distance (300 mm = 12", 350 mm = 14", etc.). The versatile Objective Lens is also compatible with previous models, such as the Evolution xR6 and IQ dental/ENT microscopes. Lengths Seiler Objective Lens Lengths #7-175L: f = 175 mm. #7-200L: f = 200 mm. #7-250L: f = 250 mm. #7-300L: f = 300 mm. #7-400L: f = 400 mm. Literature Seiler Objective Lens Literature Seiler Colposcopes Catalog Seiler ENT Catalog Seiler Dental Catalog
