Preston Products and Services is a DBA of Research Ventures in Services and Manufacturing, LLC.

Since the year 2003, Kevin George, manager of Preston Products, has been developing and perfecting what is now the PS-525 Pitot-Static tester. Much research went into finding the best vacuum and pressure pumps, and even more research went into obtaining the best low-cost pressure sensor. The goal was to build a pitot-static test box that would be truly portable, and be all that the general aviation avionic shops would want in a test box of this category.

Part of the plan was to include an encoder reader in the box, as many shops either do not have one, or must use one they designed in-shop, and is separate from the pitot-static test box. This objective was realized, and is incorporated within the PS-525 tester.

Kevin George owned and operated an avionics shop for 3 years, and has extensive knowledge of the general aviation field.

Preston Products is all American owned and American made. It is presently a family business that has potential to grow into many products, due to the unique characteristics of the PPS-1030 digital pressure sensor.