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Specification of Mechanical Parts :
Lead Screw dia of 17mm pitch 1mm. Threaded length of 200mm.Lead screw and its nut are optically lapped to maintain constantly for the pitch. Mirror mounts are kinematics type having orthogonal till arrangement in X and Y plane by means of fine threaded screws. Interferometer Is provided by three scales. Linear scale (0-150mm graduated in mm is attached with the left hand side or the bed of interferometer One division of graduated Disc+ 0.01mm. A graduated slow motion drum ((graduation 0-100 Div) is fitted on right hand side of the Interferometer One division of slow motion drum =.00001mm(i.e)least count of Inteferometer:001mm. A Graduated slow motion drum (graduation (0-100 Div) is fitted on right hand side of the interferometer of 10mm.
Optical Parts 40mm x 30 mm 8mm optical finish both faces accuracy upto 5 seconds.
Essential Accessories
Telescope to observe the fringes , Bench Center 100mm to 200mm
Mini Bench Centre
Center distance of 150mm & Height of center of 75mm.