383-2 E. 29TH STREET, BUENA VISTA VA 24416


About Us

Quality Water Monitoring Systems

Since 1909, McNab Inc. has worked hard to provide multiple industries with the finest, most accurate cost-effective industrial and marine conductivity meters (chemical quality monitors) on the market. We pride ourselves in the highly technical products we produce, including our long history of analyzer/controller and sensor development concentrating in the fluid and power measurement fields.

We are also a family-owned business, currently in our second generation of management, since 1975. In fact, the average employee in our modern factory and research and development center has been with the company for more than fifteen years. This helps us maintain our quality products and services even as we expand to encompass global markets. After all, continuously producing high-quality and complex water quality monitoring equipment demands a closely-knit, coordinated team. Our engineers, designers, and production groups are that team.


Shipboard Monitoring Systems

At McNab, shipboard monitors and sensors are our historic foundation. These electronics are the industry standard when it comes to evaluating new ships when they move on to sea trials. That's why our cells and sensors are seen throughout the marine industry—they assure accuracy and reliability. It is also why we are the longest uninterrupted supplier of key military and commercial instrumentation in the United States.


Optical Monitoring

Our company's background was amplified in 1986 when we acquired the Jacoby Tarbox's Optical Product's Line. This acquisition gave us lengthened instrument lines for material analysis, quality control, smoke density applications, as well as extended our customer base to include the food, beverage, and chemical processing industries.

Major industrial sites in the United States, Europe, and Asia have received our optical products, conductivity meters, water analysis, and water quality monitoring equipment very well in. These represents a dominant technical force in fluid measurement, use optical, visual, near-infrared and ultraviolet technologies.



McNab is currently headquartered in Buena Vista, Virginia, where our offices include our research and development laboratory, design engineering department, modern manufacturing plant, and automatic testing facilities. Our Quality Assurance Process is in line with Mil-I-45208.

In 1987, our European office was established. This allowed us to better serve our European customers and continues to do so. Currently, this office is located in central Germany, a convenient two-hour or less plane ride from most of Western Europe. Our European office provides sales, service, translation, warehousing, parts, and repairs for our installed, European water analysis instrumentation.



There are a number of patents and trademarks on display at our main office. Of these, several date back to 1912 and are our earliest patents granted for instrument design. They also embody our company's history, highlight our ingenuity, and signal our focus on progress. Developments that are more recent include our advances in digital monitoring and data-coupled FM/FM telemetry.