Granite Solutions
Surface plates
Granite reference surfaces
Granite solutions are reference surfaces and standards of extremely high flatness and stability. Starrett makes them in Crystal Pink® and Superior Red granite—the latter with the highest quartz content for greater wear resistance—in AA (laboratory), A (inspection) and B (shop) grades.
Surface plates are the metrology shop's quintessential reference plane: an exact base for inspecting, laying out and mounting instruments. Granite is stable, non-magnetic, wear resistant and minimizes the need for regrinding. Available from 300×300 mm up to more than 1800×1200 mm, with or without a ledge.
Main features
High-flatness reference surface
Grades AA (laboratory), A and B
Stable, durable black granite
Brand
Typical applications
- Reference surface for inspection
- Layout and marking base
- Mounting of measuring instruments
- Flatness verification
- Height gage base
- Inspection of machined parts
- Instrument calibration
- Metrology laboratory
- Quality control
Featured products
| Size / Model | Grade | Description |
|---|---|---|
| 300 × 300 mm (12×12") | AA / A / B | Portable or benchtop reference plane. |
| 450 × 300 mm (18×12") | AA / A / B | Part inspection and layout. |
| 600 × 450 mm (24×18") | AA / A / B | General inspection. |
| 900 × 600 mm (36×24") | AA / A / B | Precision metrology. |
| 1200 × 900 mm (48×36") | AA / A | Large parts. |
| 1800 × 1200 mm (72×48") | AA / A | Laboratory and CMM. |
Note: The data shown is for reference only and may vary depending on the model, the manufacturer and the conditions of use.
Related products
Surface plate standsSteel stands that support and stabilize surface plates.
Surface plate coversCompact surfaces for portable inspection of small parts.
Five-face master squaresX-Y-Z alignment verification on CNC and CMM.
Tri-squaresEconomical option for checking machine and CMM axes.
Angle platesVertical workholding for inspection and machining.