This item can only be shipped to schools, museums and science centers
Precise, solidly constructed instrument for advanced studies of Michelson and Fabry-Pérot configurations. This interferometer features a large range of mirror movement and high quality optics, which is ideal for precise wavelength determinations, refractive index measurements and other demanding optical work. The base consists of a substantial casting that supports a machined and ground lathe bed at a convenient height for observation. Large coarse adjustment knob sets the mirror position to within 0.01 mm, read on a 205-mm divided steel scale and a numbered dial for fractions of a millimeter. A further graduated fine adjustment knob reads to the 0.0001 mm. The interferometer optics fixed parts are mounted on vertical steel plates that attach to the side of the lathe bed. Each mirror carries three coarse adjustment screws and the fixed mirrors also have a two-dimensional flexion bar fine adjustment system. Device includes a 3X fixed focus telescope with diopter adjustment for viewing remotely located fringe patterns and a 70-mm diameter ground glass screen with a 5-mm pitch grid for easy setup and viewing projected localized fringes. Includes operator’s manual.