When using Network Time Protocol (NTP), a common term is "Strata".
Strata or Stratum are terms used to describe the distance a particular device is from a time source. The further away it is, the less accurate its time sync will be.
Strata levels from 0-15 can be used for NTP time synchronisation.
Stratum 0 describes a time source like an internal atomic clock or GNSS signal.
Stratum 1 is a device directly synced to the source, outputting an NTP signal to a stratum 2 device. Tekron clocks are stratum 1 devices.
Stratum 2 is a device connected to a Stratum 1 device, Stratum 3 is connected to a Stratum 2 device, and so on.
Tekron clocks can be used as NTP servers, however for real precision and security we recommend PTP (Precision Time Protocol). See here for more on PTP.