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  • Van Slyke Instruments
    Van Slyke Instruments
    719.495.3828
    12815 Porcupine Ln, 80908-3510  Colorado Springs

    Although most Crayford focusers on the market today utilize VSI's [original] central pressure point design, we continue to stay ahead of the game by continually improving our products, as noted by the myriad of improvements to our focusers over the decades. VSI has always maintained only the basic …