A2LA Certification A2LA Accredited Certificate


A leading manufacturer of granite surface plates, accessories and machine bases.
Since 1984 we have strived to exceed our customers' expectations in every way.

We produce our granite products from several types of granite, depending on the customer's needs. Laboratory tests have shown that fine-grained black granites are stronger, denser, and less absorbent than other granites. For this reason precision machine bases, air-bearing surfaces and accessories are best made from black granite.

Our knowledgeable staff can assist you in selecting the best granite for your product, based in regard to uniformity of surface, accuracy, deflection under load, type of use and price.

We are ISO 9001 Certified and our granite is quarried in the state of California.

The best USA Made precision granite products
The best prices
The best delivery

Calibration, Resurfacing, and Repair Services are available on-site or at our facility

17025 Accredited Calibration. Calibration, Resurfacing, and Repair Services are available on-site or at our facility

We also suggest our Protective Granite Cleaner which penetrates the granite surface to loosen dirt, grime and residues. It leaves the surface clean, allowing instruments to slide without the resistance that wears down the precision surface.

The only granite with the USA registered trademark: PRECISION GRANITE

The old website can be listed here.

1x2x3 Block | Angle Plate | Box Parallel | Cases | Castered Stand | Cleaner | Comparator Stand | Covers | Custom Granite | Granite Cleaner | Indicator Stands | Inserted Angle Plate | Inspection Table | Machine Bases | Master Square | Metal Stands | Parallels | Pedestals and Leveling Jacks | Riser Block | Stationary Stand | Steel Support Stand | Step Block | Straight Edge | Surface Plate | Surface Plate Cover | Tri-Square | Vee Block | V-Block | 17025 Accredited Calibration

Precision Granite
USA ● sales@precisiongraniteusa.com ● 562.696.8328