The Bi Prism Assembly is assembled from the following standardised components.
1)Optical Bench, 1 metre long mild steel
2) Universal lens holder spring type,
3)One Micrometer Eye-piece
4|) One Adjustable Slit, True precision ground Stainless Steel jaws having spring action opening the jaws uniformly all along through a milled head.
5) Bi prism Holder, having fine radial motion by a fine pitch screw.
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