A team of expert professionals

Since 1965, Rock of Ages has been producing the highest quality, precision granite products. That makes us one of the US’s oldest manufacturers of said products, if not the world.

Combined, our staff’s experience is measured in hundreds of years. Our team’s common goal: to produce the most accurate precision granite products available anywhere.

Precision granite
Precision granite plate

Quality & accuracy

Feel confident in your decision to use Rock of Ages knowing our surface plates meet or exceed Federal Specification GGG-P-463c and that all standard metrology products are supplied with a NIST traceable calibration certificate.

Craftsmen centre
& production facility

The size of our precision granite facility spans over 60,000 square feet, which includes two separate temperature controlled areas. This space provides us with the opportunity to showcase our capabilities, such as the ability to meet critical geometries to the sub-micron range and provide intricate structural shapes with state-of-the-art computer controlled equipment. In-house, we can manufacture small products to others, up to 50 feet long, weighing up to 200 tons.

Surface plate

You will be redirected to Polycor's Shop to order.

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Polycor Shop