TGS1_PTB

Grating set TGS1 (consists of three gratings TGZ1, TGZ2, TGZ3) can be ordered with PTB traceable certificate.
The gratings TGS1_PTB are measured on the AFM which has been preliminary calibrated using the PTB certified grating set TGS1.
Step heights: 20±1.5nm, 110±2nm,  520±3nm.
In comparision with TGS1 grating set you will have height meanings with lower uncertainties that will help to obtained more reliable scans of the scanned objects.