Differential interferance contrast tube.It is available for the observation forminuscule bump by enhancing contrast.Locking feature for polarizer,analyser and Nomarski prism allow adjustment and adaptionto existing system.|Tube lens :MS-200-DIC-RSⅡ| Objective lens:DICPlan2.5XRS-SB / DICPlan5XRS-SB /DICPlan10XRS-SB / DICPlan20XRS-SB