Millar Instruments designs and manufactures high-fidelity catheters utilizing pressure sensing and other technologies that measure physiological parameters in both animal and human subjects. Millar also designs and manufactures the interface between hardware and software that processes the signals from these catheters, giving valuable information to the doctor. Since 1971, Millar has been known as the "Gold Standard" for pressure measurement and still retains this title. Millar performs desig