"Headquartered in Maple Ridge, British Columbia, Canada, RST Instruments Ltd. has been in the engineering instrumentation industry since 1977. From the conceptual design of site-specific products to the exceptional post-sale calibration and repair service offered by the company's technical department, RST's commitment to client satisfaction is a goal common to staff, management, and distributors alike". Source: http://www.rstinstruments.com/index.html