The first principles of precision...

Professional Instruments Company manufactures the world’s most accurate air bearing spindles and slides for customers who require millionth-inch precision, high stiffness, and zero friction. Since 1946, we have solved our customers’ problems in manufacturing, measuring, and scientific research. Anywhere ultra-precise motion or geometry is involved, there’s a good chance we have something to do with it.

In addition to our product line of air bearings, we provide a wide range of sub-contract manufacturing including tools, gages, precision cams, special machines, and prototype or production parts. Our highly skilled technicians combine a profound understanding of precision engineering with the experience of many years; we satisfy and delight customers around the globe. For prompt, personal service, please let us know how we might contribute to your high-precision project.