Raman Spectroscopy is a non-destructive chemical analysis technique which provides detailed information about chemical structure, phase and polymorphy, crystallinity and molecular interactions. It is based upon the interaction of light with the chemical bonds within a material. The Green laser light of 532 nm used for the analysis. It consists of three eye pieces with three different magnifications (10X, 50X and 100X). The Height of eye piece can be varied to do mapping analysis. Real time Display (RTD) is used to analysis the insitu reaction of the sample. The Thickness of the coated surface can be analysed using this instrument.