A manual micrometer having an overall linear travel range of 2.5 mm with a 0.0001 mm (100 nm) minimum increment was used to move the translation stage and thus accurately change the pathlength difference. A standard digital camera was used to detect the interference pattern and a video monitor allowed visualization of the camera's output. The camera output was routed to a computer/framegrabber to record the interference intensity in digital format. A dedicated software program was written in LabVIEW® and could be modified based on the requirements of the experiment. The software was able to produce a near real-time picture of the fringe patterns, acquire intensities (grey scale pixel values) of the fringe patterns almost continuously, and store the information in a text file format. Basic data processing, noise reduction, and fringe counting are additional features useful in this research.