The Mitutoyo Black Granite Surface Plates are made of exceptionally fine-grained black granite free from deterioration and dimensional changes, offering many advantages over cast iron surface plates.

Black Granite Surface Plates – A Grade
Features & Benefits
Constructed of natural fine-grain granite seasoned for thousands of years, the Mitutoyo Black Granite Surface plates are free from burrs, protrusions, rust, and wringing, making them ideal for precision measurement platforms. The granite plates are twice as hard as cast iron plates and feature superior flatness, non-magnetic properties and longer service life resulting in low maintenance costs and better accuracy.
- Available in A Inspection Grade
- Accuracies range from 100 – 2000 μin
- Available in 100lbs. load/sq. ft. no ledge
- Trouble-free operation for use with magnetic materials
- Mitutoyo granite surface plates include a Certificate of Accuracy with traceability to NIST
- Mitutoyo granite surface plates meet or exceed federal specification GGG-P-463c
- Surface plates needed in specific sizes other than standard are available by special order
- Surface plates, with the bolt screws, available by special order
- All Mitutoyo surface plates shipped F.O.B. Escondido, CA
- All granite plates from 48”x 108” and larger are machine-base gray granite; smaller plates are black granite
Product List
Order No.: | Product Image: | Size: | Accuracy: | Weight: |
---|---|---|---|---|
517-800 | - | 8 x 12 x 2" | 100μin | 25 lbs |
517-804 | - | 18 x 18 x 4" | 100μin | 150 lbs |
517-809 | - | 24 x 48 x 6" | 300μin | 800 lbs |
517-812 | - | 30 x 60 x 10" | 500μin | 1535 lbs |
517-817 | - | 48 x 48 x 6" | 400μin | 1525 lbs |
517-818 | - | 48 x 60 x 10" | 500μin | 3150 lbs |
517-819 | - | 48 x 72 x 10" | 600μin | 3800 lbs |
517-820 | - | 48 x 84 x 12" | 700μin | 5325 lbs |
517-821 | - | 48 x 96 x 12" | 800μin | 6050 lbs |
517-822 | - | 48 x 108 x 12" | 1000μin | 6830 lbs |
517-823 | - | 48 x 120 x 16" | 1400μin | 10160 lbs |
517-824 | - | 48 x 144 x 16" | 1600μin | 12200 lbs |
517-825 | - | 60 x 60 x 12" | 500μin | 4800 lbs |
517-826 | - | 60 x 72 x 12" | 700μin | 5750 lbs |
517-827 | - | 60 x 96 x 12" | 1000μin | 7600 lbs |
517-828 | - | 60 x 120 x 14" | 1400μin | 11100 lbs |
517-829 | - | 60 x 144 x 16" | 1800μin | 15100 lbs |
517-830 | - | 72 x 72 x 12" | 800μin | 7000 lbs |
517-831 | - | 72 x 96 x 14" | 1000μin | 10800 lbs |
517-832 | - | 72 x 120 x 14" | 1400μin | 13400 lbs |
517-833 | - | 72 x 144 x 16" | 2000μin | 18100 lbs |