| Description | certified values (nm) | RM name | RM type | RM no. |
|---|---|---|---|---|
|
HOPG terminated with graphene layer
Ideal atomically flat surface Standard for SPM investigations |
automically flat surface | RM | 29 | |
|
Flatness standard
(Calibration certificate of PTB) |
10 | FLAT-CERT | RM | 2 |
| Deviation from flatness | 65 | flatness standard FtS | RM | 1 |